Thang Long Imperial Citadel is a precious heritage of Hanoi. He stressed the need to promote the citadel relic site’s values in line with tourism development. He also underscored the importance of strengthening international cooperation in restoring and promoting the values of the Thang Long Imperial Citadel. The Thang Long Imperial Citadel was built in the 11th century by the Ly Viet Dynasty, marking the independence of the Dai Viet. (Photo: VNA) The Centre Sector of the Thang Long Imperial Citadel was recognised as a special national relic site in 2009 and a UNESCO World Heritage Site in August 2010. So far, the