The original name of the pagoda was Dien Huu pagoda which literally means long lasting happiness and and good luck. The pagoda is situated in the western part of the city. It was first built in 1049 in the reign of King Ly Thai Tong. legend has it that at time King Ly Thai Tong was very old and had no sons of his own. One night he had a dream that he was granted a private audience with Buddha with a male baby on his hands. Buddha seating on a lotus flower in a square-shaped lotus pond in the western side of Thang Long Citadel, gave the king the baby. Month later the queen got pregnant and she gave birth to a male. To repay the gift from Buddha, the king ordered the construction of a pagoda with was supported by only one pillar resembling a lotus seat on which Buddha had been seated. The pagoda was dedicated to Buddha.