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Pisa Tower

Last Updated: 12/02/2025

What Is the Leaning Tower of Pisa?

The Leaning Tower of Pisa is a bell tower located in Italy and famous for its tilt. Built in the 12th century, it is part of the Pisa Cathedral. It is constructed from white marble and has a circular plan.


Leaning Tower of Pisa (Generated by Artificial Intelligence)

Why Is It Leaning?

During construction, the ground beneath the tower was too soft. As a result, the foundation did not settle properly and the tower began to tilt. Construction was halted for about a century, after which upper levels were built with slight adjustments to compensate for the lean.


When Was It Built?

  • Construction of the Leaning Tower of Pisa began in 1173.
  • Work was suspended for about 100 years due to the tilting problem.
  • The top floor was completed in the 14th century.


Features

  • It has eight stories and a total of 294 steps.
  • At the top are seven bells, each tuned to a different note.
  • The tower is decorated with white marble stones.


Leaning Tower of Pisa (Pexels)

How Was It Stabilized?

Over the years, the tilt increased and the tower faced the risk of collapse. Between 1990 and 2001, extensive restoration work reduced the tilt by four degrees and secured its stability.


Current Significance

The Leaning Tower of Pisa was added to the UNESCO World Heritage List in 1987. Today, it is both a major attraction for tourists and an important architectural and engineering landmark.

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INSPIRATION NOTE FOR CURIOUS KIDS!

The Leaning Tower of Pisa shows us that a structure that began with errors can become a world-famous masterpiece through correct engineering efforts. Perhaps you will also work on such major projects in the future!

Who Wrote?
Kids Writing
AuthorSümeyye Akkanat TerzioğluDecember 2, 2025
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The Leaning Tower of Pisa is a bell tower in the city of Pisa, Italy, famous for its tilt. Construction began in 1173, and due to a soft foundation, it leaned over time; today it is listed on the UNESCO World Heritage List.

Bibliographies

Pexels. “Eğik Pisa Kulesi.” Pexels. Accessed July 30, 2025. https://www.pexels.com/tr-tr/fotograf/egik-pisa-kulesi-1144272/.

Pexels. “Kulenin Mavi Gökyüzü Karşısındaki Düşük Açılı Görünümü.” Pexels. Accessed July 30, 2025. https://www.pexels.com/tr-tr/fotograf/kule-nin-mavi-gokyuzu-karsi-dusuk-acili-gorunumu-286746/.

TÜBİTAK Bilim Genç. "Depremler Pisa Kulesini Neden Yıkamıyor?" Accessed July 30, 2025. https://bilimgenc.tubitak.gov.tr/makale/depremler-pisa-kulesini-neden-yikamiyor.

TÜBİTAK Popüler Science Journals. “Pisa Kulesi.” *Bilim Dergileri Teknik* 29, no. 340 (2019): 60–63. Accessed July 30, 2025. https://e-dergi.tubitak.gov.tr/edergi/yazi.pdf?dergiKodu=4&cilt=29&sayi=340&sayfa=60&yaziid=8846.

UNESCO. "Piazza del Duomo, Pisa." Accessed July 30, 2025. https://whc.unesco.org/en/list/395.

University of Bristol. “500-year-old Leaning Tower of Pisa mystery unveiled by engineers.” Accessed July 30, 2025. https://www.bristol.ac.uk/news/2018/may/tower-of-pisa.html.

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