To the right of the Ho Chi Minh Museum is the unique One-Pillar Pagoda, a wooden structure built in 1049 that sits on stilts over a lake. A king of the Ly Dynasty, Ly Thai Thong King had it built after having a dream in which Bodhisattva Avalokitesvara, the goddess of mercy, presented him with a lotus flower. The existing pagoda is a miniature reproduction of the original, which was said to represent a lotus emerging from the water. It is certainly interesting, and a prayer here is said to bring fertility and good health. It's best to wear something full-length (skirt or trousers), not shorts.