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The Leaning Tower of Pisa卫星地图 (世界奇迹指南)

http://en.wikipedia.org/wiki/Leaning_Tower_of_Pisa The Leaning Tower of Pisa (Italian: Torre di Pisa) is the campanile, or bell tower, of the Italian city of Pisa's cathedral. The tower was intended to stand vertically, but began leaning soon after construction started in August of 1173. The height of the tower is 55 metres from the ground. Its weight is estimated at 14,500 tonnes. The current inclination is about ten percent. The tower has 296 steps.