World Wonder Destination 5: Pisa, Italy
The Leaning Tower of Pisa
The Leaning Tower of Pisa, Italy, that is famous for the settling of its foundations, which caused it to lean 5.5 degrees (about 4.5 meters) from the perpendicular by the late 20th century. The bell tower, begun in 1173 as the third and final structure of the city's cathedral complex, was designed to stand 185 feet (56 meters) high and was constructed of white marble. Three of its eight stories were completed when the uneven settling of the building's foundations in the soft ground became noticeable.