Square, Plaza sights in Vietnam
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Most of Hué's sights and a sizeable chunk of its population reside within the 2m-thick, 10km-long walls of its Citadel on the north bank of the river. Begun in 1804 on a site chosen by Emperor Gia Long's geomancers, it was originally made of earth and later strengthened with brick.
Housing the emperor's residence and the main buildings of state, the Imperial Enclosure is a citadel-within-a-citadel, with 6m-high walls that are 2.5km in length. The enclosure was badly bombed during the French and American wars, and a large part of it is still park-like ruins. Restoration of the least damaged sections and the complete rebuilding of others is an ongoing project.