Qualla: Leaning Tower of Pisa

Leaning Tower of Pisa: Introduction

Fri, 13 Mar 2026 00:00:00 GMT

Photo credit Saffron Blaze, CC BY-SA 3.0. The foundation is three meters deep. For a tower that would rise to 56 meters and weigh 14,500 tons, three meters of foundation in soft alluvial soil was a miscalculation of spectacular proportions. The Leaning Tower of Pisa began tilting before the builders reached the third floor. They kept building anyway -- adjusting, compensating, curving the structure upward like a banana as they tried to correct the lean even as they added to it. Construction stretched across 199 years, interrupted by wars, bankruptcies, and the naval catastrophe at the Battle of Meloria. The result is arguably the world's most beloved engineering failure: a building that attracts over five million visitors a year precisely because it does not do what buildings are supposed to do.

Read more: Leaning Tower of Pisa on Qualla

Image: Saffron Blaze | CC BY-SA 3.0

Leaning Tower of Pisa: A Widow's Sixty Soldi

Fri, 13 Mar 2026 00:00:00 GMT

Photo credit Joanbanjo, CC BY-SA 3.0. The tower's origin can be traced to a specific act of generosity. On 5 January 1172, a widow named Donna Berta di Bernardo bequeathed sixty soldi to the Opera Campanilis -- the fund for the cathedral's bell tower. Her donation purchased the first stones of the foundation. Work on...

Read more: Leaning Tower of Pisa on Qualla

Image: Joanbanjo | CC BY-SA 3.0

Leaning Tower of Pisa: Built Crooked on Purpose

Fri, 13 Mar 2026 00:00:00 GMT

Photo credit Lonewolf1976 (talk) Original uploader was Lonewolf1976 at en.wikipedia, CC BY-SA 3.0. When construction resumed in 1272 under Giovanni di Simone -- the same architect who designed the Camposanto -- the builders faced an impossible choice. They could not straighten the tower, but they could not leave it leaning at its current angle without risking collapse as it gr...

Read more: Leaning Tower of Pisa on Qualla

Image: Lonewolf1976 (talk) Original uploader was Lonewolf1976 at en.wikipedia | CC BY-SA 3.0

Leaning Tower of Pisa: The Sergeant Who Held His Fire

Fri, 13 Mar 2026 00:00:00 GMT

Photo credit Sailko, CC BY-SA 4.0. By the 20th century, the lean had reached alarming proportions. The tilt increased to 5.5 degrees by 1990 -- far beyond anything the medieval builders had contended with. The tower was closed to the public on 7 January 1990, prompted in part by the sudden collapse of the Civic To...

Read more: Leaning Tower of Pisa on Qualla

Image: Sailko | CC BY-SA 4.0

Leaning Tower of Pisa: Saving the Lean

Fri, 13 Mar 2026 00:00:00 GMT

Photo credit Joanbanjo, CC BY-SA 3.0. The challenge was never to straighten the tower but to stabilize its lean without destroying the very quality that made it famous. The Italian government requested international aid in 1964. Over the following decades, most interventions failed; some actually worsened the tilt. I...

Read more: Leaning Tower of Pisa on Qualla

Image: Joanbanjo | CC BY-SA 3.0