Brief summaryThe Central Sector of the Imperial Citadel of Thang Long -- Hanoi, located in the heart of the capital of Viet Nam, is the most important and best-preserved part of the ancient Imperial Citadel of Thang Long. The Thang Long Imperial Citadel was built in the 11th century by the Vietnamese Ly Dynasty, marking the independence of the Đại Việt. The Imperial Citadel of Thang Long is characterized by its longevity and continuity as a seat of power, evidenced by different archaeological levels and monuments. Criterion (ii): The Central Sector of the Imperial Citadel of Thang Long - Hanoi bears witness to the meeting of influences coming mainly from China in the north and the Kingdom of Champa in the south. Criterion (iii): The Central Sector of the Imperial Citadel of Thang Long bears witness to the long cultural tradition of the Viêt populations established in the Delta and the lower Red River Valley.