The One Pillar Pagoda is one of the few monuments of Vietnam dating back to the time of the founding of the first Vietnamese empire independent from China in the 11th century. However, the present pagoda is not the original building. After it has repeatedly been damaged or destroyed in its almost 1,000 years of existence, it was renovated and rebuilt over and over again. The last reconstruction took place in 1955, after the French colonial forces had blown it up before their retreat in 1954. The original pagoda had been constructed in 1049 under Emperor Ly Thai Tong, after a goddess had appeared in his dreams and allegedly handed a son to him.

This is a 200 x 700 metre lake in the middle of the city. It's associated with a famous semi-historical legend. There is an island in the middle of the lake with a stupa of a tortoise and a three-story octagonal tower. This is an amazing place to see and visit.