Imperial Citadel of Thăng Long

The Imperial Citadel of Thăng Long (Vietnamese: Hoàng thành Thăng Long; chữ Hán: 皇城昇龍) is a complex of historic buildings associated with the history of Vietnam located in the centre of Hanoi, Vietnam. Its construction began in 1010 and was completed in early 1011 under the reign of Emperor Lý Thái Tổ of the Lý dynasty.