People went to pray at the Lang Pagoda on full moon day (Lunar calendar). Lang Pagoda is on of the oldest pagoda in Hanoi. The pagoda was built in the reign of King Ly Anh Tong (1138-1175). Lang Pagoda was built to worship the King Ly Than Tong and Zen Master Tu Dao Hanh.
This is the historical central area of Hanoi, capital of Hanoi. Hanoi estimated population 3,398,889 (2007), is the capital and second-largest city of Vietnam. From 1010 until 1802, with a few brief interruptions, it was the political centre of an independent Vietnam. It was eclipsed by Huế during the Nguyen Dynasty as the capital of Vietnam, but Hanoi served as the capital of French Indochina from 1887 to 1954. From 1954 to 1976, it was the capital of North Vietnam.