The One-pillar pagoda or Dien Huu pagoda, has one of the most special architectures in Vietnam. The pagoda started being constructed under Ly’s dynasty in 1049. The legend goes that one night in 1049, King Ly Thai Tong dreamed of the Holy Lady (Phat ba Quan Am) sitting on a lotus and leading him to a similar building. When he woke up, he was advised by Thien Tue monk to build the pillar-based pagoda like in his dream and topping it with the lotus of the Holy lady. The pagoda now became one of the most meaningful symbols of Hanoi.