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
Basic information
LocationPisa, Italy
Geographic coordinates43°43′23″N 10°23′47″E / 43°43′23″N 10°23′47″E / 43.72306; 10.39639
Architectural description
Architect(s)Bonanno Pisano
Architectural styleRomanesque
Height (max)55.86 metres (183.3 ft)
UNESCO World Heritage Site
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 ˈpiːsa; ˈpiːza]) is the campanile, or freestanding bell tower, of the cathedral of the Italian city of Pisa, known worldwide for its unintended tilt. 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 tower's tilt began during construction in the 12th century, caused by an inadequate foundation on ground too soft on one side to properly support the structure's weight. The tilt increased in the decades before the structure was completed in the 14th century. It gradually increased until the structure was stabilized (and the tilt partially corrected) by efforts in the late 20th and early 21st centuries.

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. In 1990 the tower leaned at an angle of 5.5 degrees,[2][3][4] but following remedial work between 1993 and 2001 this was reduced to 3.97 degrees,[5] reducing the overhang by 45 cm at a cost of £200m.[6] It lost a further 4 cm of tilt in the two decades to 2018.


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,[7] 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[8] 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.

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
Basa Jawa: Menara Pisa
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