久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

Leaning Tower of Pisa in Italy might be the most famous of its kind in the world, though it isn't the most lop-sided. China also boasts for many leaning towers thanks to its splendid ancient architecture.

Known as the "first leaning tower of the world", Qianwei Town Leaning Tower is a brick and stone-structured tower situated in Suizhong County, Liaoning Province. The 10-meter-high three-story tower was built in the ninth century. Affected by the subsidence of its groundsill, the tower began to lean. About 30 years ago the gradient reached 12 degrees, twice that of the Pisa Leaning Tower.

1

2

3

4

5