The Leaning Tower of Pisa

This model represents the Leaning Tower of Pisa, one of the most recognizable monuments in the world and a defining example of medieval Italian architecture. The geometry focuses on the tower’s characteristic tilt, cylindrical form, and stacked arcades, aiming for visual accuracy rather than stylization.

The Leaning Tower of Pisa is the freestanding bell tower (campanile) of the Cathedral of Santa Maria Assunta, located in Pisa, Italy. The structure is composed of multiple levels of open loggias with rounded Romanesque arches, topped by a bell chamber.
 

Construction of the tower began in 1173 and proceeded in several phases over nearly two centuries. The tilt appeared early, after the first few floors were built, due to unstable subsoil composed of clay, sand, and silt. As construction resumed after long interruptions, later builders attempted to compensate by slightly angling upper floors in the opposite direction, giving the tower its subtle curvature.

The tower was completed in the 14th century and served as the cathedral’s bell tower, housing seven bells tuned to musical notes. Over time, the increasing lean became both a structural concern and a symbol of the city. Extensive stabilization efforts in the late 20th and early 21st centuries reduced the tilt and secured the monument for the future.

Today, the Leaning Tower of Pisa stands as a landmark of Italian Romanesque architecture and a well-known example of how engineering challenges can become an enduring part of cultural identity.