Hue has chosen to be the capital city of the Southern Kingdom by all Nguyen Lords and officially became the capital under Tay Son’reign. For approximately 400 years, Hue has become a great landscape and architectural site.

Hue’ royal complex has been officially recognized by the UNESCO as a World Heritage Site. Situated on the Northern bank of the Perfume River, with an area of 500 ha and a system of three circles of ramparts, namely from outside to inside: Kinh Thanh (Capital Citadel), Hoang Thanh (Royal Citadel) and Tu Cam Thanh (Forbidden Citadel).