Discovered in 2002, the ancient citadel was recognised by the United Nations Educational, Scientific and Cultural Organisation (UNESCO) as part of the world cultural heritage in 2010.
The site won the recognition thanks to its three outstanding characteristics: the length of its cultural history, the continuity of the citadel as a power centre and the variety of relics it contains.
The archaeological excavation in the site has revealed evidence dating from the 11th century to 19th century.
Hanoi is also carrying out a lot of measures to preserve the vestiges as well as promote the global value of the site.
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