A freestanding bell tower, the Leaning Tower of Pisa is part of the Cathedral Square complex in Pisa, alongside the cathedral and the Baptistry. Its distinctive tilt, caused by an unstable foundation, measures nearly four degrees, making it a notable example of medieval engineering challenges. The tower's cylindrical shape rises in white marble with a series of arcaded galleries encircling each level.
Constructed as the campanile for Pisa Cathedral, the tower features eight stories, including the chamber for its seven bells. The lean becomes more pronounced when viewed from the side, highlighting the structural adjustments made over centuries to prevent collapse. The surrounding square provides a clear view of the tower’s Romanesque architectural details and its relationship to the adjacent religious buildings.