Leaning Tower of Pisa

Leaning Tower of Pisa
Torre pendente di Pisa
The Leaning Tower of Pisa SB.jpeg
Leaning Tower of Pisa in 2013
AffiliationCatholic Church
Ecclesiastical or organizational statusActive
LocationPisa, Italy
Geographic coordinates43°43′23″N 10°23′47″E / 43°43′23″N 10°23′47″E / 43.72306; 10.39639
Architect(s)Bonanno Pisano
Height (max)55.86 metres (183.3 ft)
Part ofPiazza del Duomo, Pisa
Inscription1987 (11th Session)

The Leaning Tower of Pisa (Italian: Torre pendente di Pisa) or simply the Tower of Pisa (Torre di Pisa [ˈtorre di ˈpiːza]) is the campanile, or freestanding bell tower, of the cathedral of the Italian city of Pisa, known worldwide for its nearly four-degree lean, the result of an unstable foundation. The tower is situated behind the Pisa Cathedral and is the third-oldest structure in the city's Cathedral Square (Piazza del Duomo), after the cathedral and the Pisa Baptistry.

The height of the tower is 55.86 metres (183.27 feet) from the ground on the low side and 56.67 metres (185.93 feet) on the high side. The width of the walls at the base is 2.44 m (8 ft 0.06 in). Its weight is estimated at 14,500 metric tons (16,000 short tons).[1] The tower has 296 or 294 steps; the seventh floor has two fewer steps on the north-facing staircase.

The tower began to lean during construction in the 12th century, due to soft ground which could not properly support the structure's weight, and it worsened through the completion of construction in the 14th century. By 1990 the tilt had reached 5.5 degrees.[2][3][4] The structure was stabilized by remedial work between 1993 and 2001, which reduced the tilt to 3.97 degrees.


There has been controversy about the real identity of the architect of the Leaning Tower of Pisa. For many years, the design was attributed to Guglielmo and Bonanno Pisano,[5] a well-known 12th-century resident artist of Pisa, known for his bronze casting, particularly in the Pisa Duomo. Pisano left Pisa in 1185 for Monreale, Sicily, only to come back and die in his home town. A piece of cast bearing his name was discovered at the foot of the tower in 1820, but this may be related to the bronze door in the façade of the cathedral that was destroyed in 1595. A 2001 study seems to indicate Diotisalvi was the original architect, due to the time of construction and affinity with other Diotisalvi works, notably the bell tower of San Nicola and the Baptistery, both in Pisa.[6]

Other Languages
asturianu: Torre de Pisa
azərbaycanca: Piza qülləsi
Bân-lâm-gú: Pisa ê Khi-pêng Thah
беларуская: Пізанская вежа
беларуская (тарашкевіца)‎: Пізанская вежа
català: Torre de Pisa
ދިވެހިބަސް: ޕީސާގެ ޓަވަރު
eesti: Pisa torn
español: Torre de Pisa
euskara: Pisako dorrea
français: Tour de Pise
한국어: 피사의 사탑
Bahasa Indonesia: Menara Pisa
interlingua: Turre Oblique
italiano: Torre di Pisa
עברית: מגדל פיזה
ქართული: პიზის კოშკი
latviešu: Pizas tornis
lietuvių: Pizos bokštas
македонски: Крива кула во Пиза
مصرى: برج بيزا
Bahasa Melayu: Menara Condong Pisa
မြန်မာဘာသာ: ပီဆာမျှော်စင်
Nederlands: Toren van Pisa
日本語: ピサの斜塔
Nouormand: Tou d'Pîse
occitan: Torre de Pisa
پنجابی: پیسا ٹاور
português: Torre de Pisa
română: Turnul din Pisa
Simple English: Leaning Tower of Pisa
slovenščina: Poševni stolp v Pisi
српски / srpski: Криви торањ у Пизи
srpskohrvatski / српскохрватски: Krivi toranj u Pisi
Basa Sunda: Munara Pisa
татарча/tatarça: Пиза манарасы
తెలుగు: పీసా టవర్
Türkçe: Pisa Kulesi
українська: Пізанська вежа
Tiếng Việt: Tháp nghiêng Pisa
粵語: 比薩斜塔
žemaitėška: Pizas buokšts
中文: 比萨斜塔