A must-see attraction in Hanoi. World Heritage Site - Hoàng thành Thng Long. The Shenglong Emperor City is an ancient capital of Vietnam for more than a thousand years. It was built in Ding, Qianli Dynasty, and then built a cultural complex by Li Dynasty. After several changes, the modern era was also affected by the French colonial period. In addition to the ancient Chinese buildings, there are also yellow and distinctive French buildings. It produces a very strong visual impact, but there is no sense of violation at all, it is worth coming here to explore.