Huzhu Pagoda is located on Tianmashan Hill in Songjiang District, Shanghai. With a leaning angle of 7.10 degrees, it surpasses the Leaning Tower of Pisa. The seven-storey octahedral pagoda was built in 1079 to store Buddhist relics bestowed by Emperor Gaozong of the Song Dynasty. Thanks to both the octahedral structure and the building material, such as sticky rice and lime, the tower leans to one side but has never collapsed. After repairs in 1980s, the pagoda can resist earthquakes up to 6-magnitude and 10-grade wind.
