Pisa ( ; ) is a city in
Tuscany, central Italy, on the right bank of
the mouth of the Arno
River
on the Ligurian Sea
. It is the capital city of the
Province of Pisa.
Although Pisa is known
worldwide for its Leaning Tower
(the bell tower of the
city's cathedral), the city of over 87,500 residents contains more
than 20 other historic churches, several palaces, and various
bridges across the Arno River.
History
Ancient times
Pisa's origins remained unknown for centuries.
The city lies at the
junction of two rivers, Arno
and Serchio
in the
Ligurian
Sea
forming a laguna area. The Pelasgi, the Greeks
, the
Etruscans
and the Ligurians have
variously been proposed as founders of the city.
Archeological remains from the 5th century BC confirmed the
existence of a city at the sea, trading with Greeks and
Gauls. The presence of an Etruscan
necropolis, discovered during excavations in the
in 1991, allowed to clarify its Etruscan origins.
Ancient Roman authors referred to Pisa
as an old city.
Servius wrote that the
Teuti, or
Pelopes, the
king of the
Pisei, founded the town thirteen
centuries before the start of the common era.
Strabo referred Pisa's origins to the mythical
Nestor, king of Pylos
, after the
fall of Troy
.
Virgil in his Aeneid
states that Pisa was already a great and developed centre by the
times described; the foundation of the city in the 'Etruscan lands'
has been credited to settlers from the Alpheus
coast.

Old half of Pisa (view from Leaning
Tower)
The
maritime role of Pisa should have been already prominent if the
ancient authorities ascribed to it the invention of the rostrum: it took advantage of being the only port
along the western coast from Genoa
(then a
small village) to Ostia
. Pisa served as a base for Roman naval
expeditions against Ligurians, Gauls and Carthaginians
. In 180 BC, it became a Roman colony under
Roman law, as . In 89 BC, became a
municipium. Emperor
Augustus fortified the colony into an
important port and changed the name in . From 313 it became the
seat of a bishopric.
Late Antiquity and Early Middle Ages
During the later years of the
Roman
Empire. Pisa did not decline as much as the other cities of
Italy, probably thanks to the complexity of its river system and
its consequent ease of defence.
In the 7th century Pisa helped Pope Gregory I by supplying numerous ships in
his military expedition against the Byzantines of Ravenna
: Pisa was
the sole Byzantine centre of Tuscia to fall
peacefully in Lombard hands, through
assimilation with the neighbouring region where their trading
interests were prevailing. Pisa began in this way its rise to the
role of main port of the Upper Tyrrhenian Sea and became the main
trading centre between Tuscany and Corsica
, Sardinia and the southern
coasts of France and Spain.
After
Charlemagne had defeated the
Lombards under the command of
Desiderius
in 774, Pisa went through a crisis but soon recovered.
Politically it became
part of the duchy of Lucca
. In
930 Pisa became the county centre (status it maintained until the
arrival of
Otto I) within
the mark of
Tuscia.
Lucca was the capital
but Pisa was the most important city, as in the middle of 10th
century Liutprand of Cremona,
bishop of Cremona
, called Pisa ("capital of the province of Tuscia"),
and one century later the marquis of Tuscia was commonly referred
to as "marquis of Pisa". In 1003 Pisa was the protagonist of
the first
communal war in Italy,
against Lucca of course. From the naval point of view, since the
9th century the emergence of the
Saracen
pirates urged the city to expand its fleet: in the following years
this fleet gave the town an opportunity for more expansion. In 828
Pisan ships assaulted the coast of
North
Africa.
In 871 they took part in the defence of
Salerno
from the Saracens. In 970 they gave also
strong support to the
Otto
I's expedition, defeating a
Byzantine fleet in front of
Calabrese coasts.
11th century
The power of Pisa as a mighty maritime nation began to grow and
reached its apex in the 11th century when it acquired traditional
fame as one of the four main historical
Maritime Republics of Italy ( ).
At that
time, the city was a very important commercial centre and
controlled a significant Mediterranean
merchant fleet and navy. It expanded its
powers by the sack in 1005 of in the south of Italy. Pisa was in
continuous conflict with the
Saracens, who
had their bases in Sardinia and Corsica, for control of the
Mediterranean.
In 1017 Sardinia was
captured, in alliance with Genoa
, by the
defeat of the Saracen king Mugahid.
This
victory gave Pisa the supremacy in the Tyrrhenian Sea
. When the Pisans subsequently ousted the
Genoese from Sardinia, a new conflict and rivalry was born between
these mighty marine republics.
Between 1030 and 1035, Pisa went on to
successfully defeat several rival towns in Sicily and conquer
Carthage
in North Africa. In 1051–1052 the
admiral Jacopo Ciurini conquered Corsica
, provoking more resentment from the Genoese.
In 1063
admiral Giovanni Orlando, coming to the aid of the Norman Roger I,
took Palermo
from the Saracen pirates. The gold treasure
taken from the Saracens in Palermo allowed the Pisans to start the
building of their cathedral and the other monuments which
constitute the famous .
In 1060 Pisa had to engage in their first battle with Genoa. The
Pisan victory helped to consolidate its position in the
Mediterranean.
Pope Gregory VII
recognized in 1077 the new "Laws and customs of the sea" instituted
by the Pisans, and emperor
Henry IV granted them the right
to name their own consuls, advised by a Council of Elders. This was
simply a confirmation of the present situation, because in those
years the marquis had already been excluded from power. In 1092
Pope Urban II awarded Pisa the
supremacy over Corsica and Sardinia, and at the same time raising
the town to the rank of archbishopric.
Pisa
sacked the Tunisian
city of Mahdia
in
1088. Four years later Pisan and Genoese ships helped
Alfonso VI of Castilla to
push
El Cid out of
Valencia.
A Pisan fleet of 120
ships also took part in the First
Crusade and the Pisans were instrumental in the taking of
Jerusalem
in 1099. On their way to the
Holy Land the ships did not miss the occasion to
sack some
Byzantine islands: the
Pisan crusaders were led by their archbishop
Daibert, the future
patriarch of Jerusalem. Pisa and the
other took advantage of the crusade to establish trading posts and
colonies in the Eastern coastal cities of the
Levant.
In particular the Pisans founded colonies in
Antiochia
, Acre, Jaffa
, Tripoli
, Tyre
, Joppa
, Latakia
and Accone.
They also
had other possessions in Jerusalem
and Caesarea
, plus smaller colonies (with lesser autonomy) in
Cairo
, Alexandria
and of course Constantinople
, where the Byzantine
Emperor Alexius I Comnenus
granted them special mooring and trading rights. In all
these cities the Pisans were granted privileges and immunity from
taxation, but had to contribute to the defence in case of attack.
In the 12th century the Pisan quarter in the Eastern part of
Constantinople had grown to 1,000 people.
For some years of
that century Pisa was the most prominent merchant and military ally
of the Byzantine Empire, overcoming
Venice
itself.
12th century
In 1113
Pisa and the Pope Paschal II set up,
together with the count of Barcelona
and other contingents from Provence and Italy (Genoese excluded), a war to free the Balearic
Islands from the Moors: the queen and the
king of Majorca
were brought in chains to Tuscany.
Even
though the Almoravides soon reconquered
the island, the booty taken helped the Pisans in their magnificent
program of buildings, especially the cathedral
, and Pisa gained a role of pre-eminence in the
Western Mediterranean.
In the following years the mighty Pisan fleet, led by archbishop
Pietro Moriconi, drove away the
Saracens after ferocious combats. Though
short-lived, this success of Pisa in Spain increased the rivalry
with Genoa.
Pisa's trade with the Languedoc and Provence
(Noli
, Savona
, Fréjus
and Montpellier
) were an obstacle to the Genoese interests in
cities like Hyères
, Fos
, Antibes
and Marseille
.
The war began in 1119 when the Genoese attacked several galleys on
their way to the motherland, and lasted until 1133. The two cities
fought each other on land and at sea, but hostilities were limited
to raids and pirate-like assaults.
In June 1135,
Bernard of
Clairvaux took a leading part in the Council of Pisa, asserting
the claims of pope
Innocent II against
those of pope
Anacletus II, who had
been elected pope in 1130 with
Norman
support but was not recognized outside Rome. Innocent II resolved
the conflict with Genoa, establishing the sphere of influence of
Pisa and Genoa. Pisa could then, unhindered by Genoa, participate
in the conflict of Innocent II against king
Roger II of Sicily.
Amalfi
, one of the
Maritime Republics (though already declining under Norman rule),
was conquered on 6 August 1136: the Pisans destroyed the ships in
the port, assaulted the castles in the surrounding areas and drove
back an army sent by Roger from Aversa
.
This
victory brought Pisa to the peak of its power and to a standing
equal to Venice
.
Two years
later its soldiers sacked Salerno
.
In the following years Pisa was one of the staunchest supporters of
the
Ghibelline party. This was much
appreciated by
Frederick I.
He issued
in 1162 and 1165 two important documents, with the following
grants: apart from the jurisdiction over the Pisan countryside, the
Pisans were granted freedom of trade in the whole Empire, the coast
from Civitavecchia
to Portovenere
, a half of Palermo
, Messina
, Salerno
and Naples
, the whole
of Gaeta
, Mazara
and Trapani
, and a street with houses for its merchants in
every city of the Kingdom of
Sicily. Some of these grants were later confirmed by
Henry VI,
Otto IV and
Frederick II.
They marked the apex
of Pisa's power, but also spurred the resentment of cities like
Lucca
, Massa
, Volterra
and Florence
, who saw their aim to expand towards the sea
thwarted. The clash with Lucca
also
concerned the possession of the castle of Montignoso
and mainly the control of the , the main trade
route between Rome and France. Last but not least, such a
sudden and large increase of power by Pisa could only lead to
another war with Genoa.
Genoa had acquired a largely dominant position in the markets of
Southern France.
The war began presumably in 1165 on the
Rhône, when an attack on a convoy,
directed to some Pisan trade centres on the river, by the Genoese
and their ally, the count of Toulouse
failed. Pisa on the other hand was allied to
Provence. The war continued until 1175
without significant victories. Another point of attrition was
Sicily, where both the cities had privileges
granted by
Henry VI.
In 1192,
Pisa managed to conquer Messina
. This episode was followed by a series of
battles culminating in the Genoese conquest of Syracuse
in 1204. Later, the trading posts in Sicily were lost
when the new Pope Innocent III,
though removing the excommunication
cast over Pisa by his predecessor Celestine III, allied himself with the
Guelph League of Tuscany,
led by Florence
. Soon he stipulated a pact with Genoa too,
further weakening the Pisan presence in Southern Italy.
To
counter the Genoese predominance in the southern Tyrrhenian Sea,
Pisa strengthened its relationship with their Spanish and French
traditional bases (Marseille
, Narbonne
, Barcelona
, etc.) and tried to defy the Venetian
rule of the Adriatic Sea
. In 1180 the two cities agreed to a
non-aggression treaty in the Tyrrhenian and the Adriatic, but the
death of Emperor Manuel Comnenus in
Constantinople
changed the situation. Soon there were
attacks on Venetian convoys.
Pisa signed trade and political pacts with
Ancona
, Pula
, Zara
, Split
and Brindisi
: in 1195 a Pisan fleet reached Pola to defend its
independence from Venice, but the Serenissima
managed soon to reconquer the rebel sea
town.
One year later the two cities signed a peace treaty which resulted
in favourable conditions for Pisa.
But in 1199 the Pisans violated it by
blockading the port of Brindisi
in Puglia
.
In the
following naval battle they were defeated by the Venetians
. The war that followed ended in 1206 with a
treaty in which Pisa gave up all its hopes to expand in the
Adriatic, though it maintained the trading posts it had established
in the area. From that point on the two cities were united against
the rising power of Genoa and sometimes collaborated to increase
the trading benefits in Constantinople.
13th century
In 1209
there were in Lerici
two
councils for a final resolution of the rivalry with Genoa. A
twenty-year peace treaty was signed.
But when in 1220 the
emperor Frederick
II confirmed his supremacy over the Tyrrhenian
coast from Civitavecchia
to Portovenere
, the Genoese and Tuscan resentment against Pisa
grew again. In the following years Pisa clashed with
Lucca
in Garfagnana and was
defeated by the Florentines
at Castel del
Bosco. The strong
Ghibelline
position of Pisa brought this town diametrically against the Pope,
who was in a strong dispute with the
Empire. And indeed the pope tried to
deprive the town of its dominions in Northern
Sardinia.
In 1238
Pope Gregory IX formed an alliance
between Genoa
and Venice
against the
Empire, and consequently against Pisa too. One year later he
excommunicated
Frederick II and called for
an anti-Empire council to be held in Rome in 1241.
On 3 May 1241, a
combined fleet of Pisan and Sicilian ships, led by the Emperor's
son Enzo, attacked a Genoese convoy carrying
prelates from Northern Italy and France, next to the Isola del
Giglio
, in front of Tuscany: the
Genoese lost 25 ships, while about thousand sailors, two cardinals
and one bishop were taken prisoner. After this outstanding
victory the council in Rome failed, but Pisa was excommunicated.
This extreme measure was only removed in 1257.
Anyway, the Tuscan
city tried to take advantage of the favourable situation to conquer
the Corsican
city of Aleria
and even
lay siege to Genoa
itself in
1243.
The
Ligurian republic of Genoa, however,
recovered fast from this blow and won back Lerici
, conquered
by the Pisans some years earlier, in 1256.
The great
expansion in the Mediterranean
and the prominence of the merchant class urged a
modification in the city's institutes. The system with
consuls was abandoned and in 1230 the new city rulers named a
Capitano del Popolo ("People's Chieftain") as civil and
military leader. In spite of these reforms, the conquered lands and
the city itself were harassed by the rivalry between the two
families of
Della Gherardesca and
Visconti. In 1237 the archbishop
and the Emperor
Frederick II intervened to
reconcile the two rivals, but the strains did not cease. In 1254
the people rebelled and imposed twelve ("People's Elders") as their
political representatives in the Commune. They also supplemented
the legislative councils, formed of noblemen, with new People's
Councils, composed by the main guilds and by the chiefs of the
People's Companies. These had the power to ratify the laws of the
Major General Council and the Senate.
Decline
The
decline began on 6 August 1284, when the numerically superior fleet
of Pisa, under the command of Albertino Morosini, was defeated by the
brilliant tactics of the Genoese fleet, under the command of
Benedetto Zaccaria and Oberto Doria, in the dramatic naval Battle of
Meloria
. This defeat ended the maritime power of
Pisa and the town never fully recovered: in 1290 the Genoese
destroyed forever the (Pisa's Port), and
covered with salt. The region around Pisa
did not permit the city to recover from the loss of thousands of
sailors from the Meloria, while
Liguria
guaranteed enough sailors to Genoa.
Goods continued to be traded, albeit in
reduced quantity, but the end came when the Arno
started to
change course, preventing the galleys from reaching the city's port
up the river. It seems also that nearby area became infested
with
malaria.
Within 1324 also
Sardinia was entirely lost in favour of the
Aragonese
.
Always
Ghibelline, Pisa tried to build up
its power in the course of the 14th century and even managed to
defeat
Florence in the
Battle of Montecatini (1315), under
the command of
Uguccione della
Faggiuola. Eventually, however, divided by internal struggles
and weakened by the loss of its mercantile strength, Pisa was
conquered by Florence in 1406. In 1409 Pisa was the seat of a
council trying to set the question
of the
Great Schism. Furthermore in
the 15th century, access to the sea became more and more difficult,
as the port was silting up and was cut off from the sea. When in
1494
Charles VIII of France
invaded the Italian states to claim the
Kingdom of Naples, Pisa grabbed the
opportunity to reclaim its independence as the Second Pisan
Republic.
But the new freedom did not last long. After fifteen years of
battles and sieges, Pisa was reconquered in 1509 by the Florentine
troops led by
Antonio da
Filicaja,
Averardo Salviati
and
Niccolò Capponi.
Its role
of major port of Tuscany went to Livorno
. Pisa acquired a mainly, though secondary,
cultural role spurred by the presence of the
University of Pisa, created in 1343. Its
decline is clearly shown by its population, which has remained
almost constant since the Middle Ages.
Pisa was the birthplace of the important early physicist,
Galileo Galilei. It's still the seat of an
archbishopric; it has become a light industrial centre and a
railway hub. It suffered repeated destruction during
World War II.

View of the (Plaza of miracles).
Geography
Climate
Pisa experiences a
Mediterranean
climate (
Köppen
climate classification Csa) characteristic of Central
and Southern Italy.
Main sights

The Monumental in the

St' Francis' church
While the
Leaning
Tower
is the most famous image of the city, it is one of
many works of art and architecture in the city's , also known,
since XX century, as (Square of Miracles), to the north of the old
town center. The also houses the (the Cathedral), the
Baptistry
and the (the monumental cemetery).
Other interesting sights include:
- Knights' Square
( ), where the , with its impressive façade
designed by Giorgio Vasari may be
seen.
- In the same place is the church of , also by Vasari. It had
originally a single nave; two more were added in the 17th century.
It houses a bust by Donatello, and paintings by Vasari, Jacopo Ligozzi, Alessandro Fei, and Jacopo Chimenti da Empoli. It also contains
spoils from the many naval battles between the Cavalieri (Knights
of St. Stephan) and the Turks between the 16–18th century,
including the Turkish battle pennant hoisted from Ali Pacha's flagship at the 1571
Battle of
Lepanto
.
- Also close to the square is the small church of St. Sixtus. It was formally consecrated in 1133,
but previously used as a seat of the most important notarial deeds
of the town , also hosting the Council of Elders. It is today one
of the best preserved early Romanesque buildings in town.
- The church of St. Francis,
designed by Giovanni di Simone,
built after 1276. In 1343 new chapels were added and the church was
elevated. It has a single nave and a notable belfry, as well as a
15th‑century cloister. It houses works by Jacopo da Empoli, Taddeo Gaddi and Santi
di Tito. In the Gherardesca Chapel are buried Ugolino della Gherardesca and his
sons.
- Church of San Frediano, built by 1061, has a basilica interior with three aisles, with a
crucifix from the 12th century. Sixteenth century paintings were
added during a restoration, including works by Ventura Salimbeni, Domenico Passignano, Aurelio Lomi, and Rutilio Manetti.
- Church of San Nicola
, built by 1097, was enlarged between 1297 and 1313
by the Augustinians, perhaps by the
design of Giovanni Pisano.
The octagonal belfry is from the second half of the 13th century.
The paintings include the Madonna with Child by Francesco Traini (14th century) and St.
Nicholas Saving Pisa from the Plague (15th century).
Noteworthy are also the wood sculptures by Giovanni and Nino Pisano, and the Annunciation by Francesco di Valdambrino.
- The
small church of Santa Maria della Spina
, attributed to Lupo di Francesco (1230),
is another excellent Gothic building.
- The church of San Paolo
a Ripa d'Arno, founded around 952 and enlarged in the
mid-12th century along lines similar to those of the Cathedral. It
is annexed to the Romanesque
Chapel of St. Agatha, with an unusual pyramidal cusp or peak.
- The , a neighborhood where one can stroll beneath medieval
arcades and the Lungarno, the avenues along the river
Arno. It includes the Gothic-Romanesque church of San Michele
in Borgo (990). Remarkably, there are at least two other
leaning towers in the city, one at the southern end of central ,
the other halfway through the riverside promenade.
- The Medici Palace, once a possession of the Appiano family, who
ruled Pisa in 1392–1398. In 1400 the Medici acquired it, and
Lorenzo de' Medici sojourned
here.
- The is Europe's oldest university botanical garden.
- The ("Royal Palace"), once of the Caetani patrician family. Here Galileo Galilei showed to Grand Duke of Tuscany the planets he
had discovered with his telescope. The edifice was erected in 1559
by Baccio Bandinelli for Cosimo I de Medici, and was later
enlarged including other palaces.
- , a Gothic building of the 14th century, is now the town hall. The interior shows frescoes boasting
Pisa's sea victories.
- , a Gothic building also known as , with its 15th century
façade and remains of the ancient city walls dating back to before
1155. The name of the building comes from the coffee rooms of ,
historic meeting place founded on 1 September 1775.
- The mural , the last public work of Keith Haring, on the rear wall of the convent
of the Church of Sant'Antonio, painted in June 1989.
Pisa boasts several museums:
- : exhibiting among others the original sculptures of Nicola Pisano and Giovanni Pisano and the treasures of the
cathedral.
- : showing the sinopias from the
camposanto, the monumental cemetery. These are red ocher underdrawings for frescoes, made with reddish,
greenish or brownish earth colour with water.
- : exhibiting sculptures and painting from 12th century–15th
century, among them the masterworks of Giovanni and Andrea
Pisano, the Master of San
Martino, Simone Martini, Nino Pisano and Masaccio.
- : exhibiting the belongings of the families that lived in the
palace: paintings, statues, armors, etc.
- : exhibiting a collection of instruments used in science,
between whose a pneumatic machine of Van Musschenbroek and a compass
probably belonged to Galileo
Galilei.
- , located in the Certosa di
Calci, outside the city. It houses one of the largest cetacean
skeletons collection in Europe.
Pisa hosts the
University of
Pisa, especially renowned in the fields of
Physics,
Mathematics,
Engineering and
Computer Science, the and the , the Italian
academic élite institutions, mostly for research and the education
of
graduate students.
Construction of a new leaning tower of glass and steel 57 meters
tall, containing offices and apartments was scheduled to start in
summer 2004 and take 4 years. It was designed by
Dante Oscar Benini and raised
criticism.
Churches
Palaces, towers and villas
Notable people associated with Pisa
For people born in Pisa, see
People from the
Province of Pisa; among notable non-natives long resident in
the city:
- Gaetano Bardini, tenor;
- Sergio Bertoni, Italian
footballer;
- Andrea Bocelli, Italian
tenor;
- Andrea Buscemi, actor;
- Giancarlo Ceccarini,
baritone;
- Giorgio Chiellini, Italian
footballer;
- Enrico Fermi and Carlo Rubbia, physicists & Nobel prize
winners;
- Galileo Galilei, physicist;
- Antonio Pacinotti, physicist,
inventor of the dynamo;
- Andrea Pisano, sculptor;
- Bruno Pontecorvo,
physicist;
- Leonardo Fibonacci,
mathematician;
- Giosuè Carducci, poet &
Nobel prize winner;
- Antonio Tabucchi, writer;
- Orazio Gentileschi,
painter;
- Leo Ortolani, comic writer;
- Afro Poli, baritone;
- Gillo Pontecorvo,
filmmaker;
- Marcello Rossi, baritone;
- Titta Ruffo, baritone;
- Jason Acuña, appears in
Jackass;
- Carlo Azeglio Ciampi and
Giovanni Gronchi, politicians,
former Presidents of the Republic of Italy;
- Giuliano Amato, politician,
former Premier and Minister of Interior Affairs;
- Giovanni Gentile, philosopher
& politician;
- Count Ugolino della Gherardesca, noble
(see also Dante Alighieri);
Transportation
Airport
Pisa is
home to the Galileo Galilei Airport
. The centre can be reached in 10 minutes
by city bus — the bus line L.A.M. Rossa (Linea ad Alta Mobilità)
connects the airport, the central
railway station and Piazza dei Miracoli.
Otherwise the centre can be reached in 5 minutes by train.
Buses
Local bus service in Pisa is managed by Compagnia Pisana Trasporti
(CPT). Intercity buses depart from the main
bus station in Piazza Sant'Antonio.
There are also
several privately run bus services going from the airport to
Florence
, Siena
and other
cities in Tuscany.
Trains
The city is served by three railway stations:
Pisa
Centrale,
Pisa Aeroporto and
Pisa San
Rossore.
Pisa Centrale is the main railway station and is located
along the Tyrrhenic railway line.
It connects Pisa directly with several
other important Italian cities such as Rome, Genoa
, Turin
, Naples
, Livorno
, Grosseto
and Florence
.
Pisa
San Rossore links the city with Lucca
(25 minutes
from Pisa) and Pistoia
and is also reachable from Pisa
Centrale. It is a minor railway station located near
the Leaning Tower zone.
Pisa Aeroporto connects the airport to the central railway
station, as well as the city of Florence.
It is located next to
the Galileo Galilei International
Airport
.
Cars
Pisa has
two exits on the A11 Genova
to Livorno
road, Pisa Nord and Pisa
Centro-aeroporto.
Pisa Centro leads visitors to the
city
centre.
Sports
Football is the main sport in
Pisa; the local team,
Pisa Calcio,
currently plays in the Italian
Serie B
(second-highest division), and has had a top flight history
throughout the 1980s and the 1990s, featuring several world class
players such as
Diego Simeone,
Christian Vieri and
Dunga during this time.
Cultural events
- Gioco del Ponte (folklore)
- Luminara di San Ranieri
- Regate delle Antiche Repubbliche Marinare
- Premio Nazionale Letterario Pisa
- Pisa Book Festival
- Metarock
International relations
Twin towns — Sister cities
Pisa is
twinned with:
Notes
References
External links