Tiger Hill Pagoda (Yunyan Pagoda) is another legend for the historic site. It is said that the tower has been leaning since its completion in 959 - 961 A.D. The tower is 48-meter tall brick pagoda with seven stories and eight sides. It was constructed earlier and taller than the Leaning Tower of Pisa. It leans to the north by about 3.5 degrees. The tower was partially repaired in 1981 by the local government. Concrete piles have been driven into the ground around the pagoda in order to reinforce the foundation. Like many pagodas of the Tang and early Song periods, it is a stone imitation of earlier (or contemporary) wooden pagodas. The "brackets" and "lintels" carved on the surface are not structural, but decorative.