Explanation
The Leaning Tower of Pisa, or simply, the Tower of Pisa, of Pisa Cathedral. It is known for its nearly four-degree lean, the result of an unstable foundation. Height: 57 m Opened: 1372 Construction started: August 9, 1173 Architects: Diotisalvi, Guglielmo Province: Province of Pisa Materials: Marble, Rock Architectural style: Romanesque architecture