Ho Citadel is situated in Vinh Tien and Vinh Long communes, Vinh Loc District, Thanh Hoa Province, approximately 150 km from Hanoi. Ho Citadel is also called Tay Do Wall - a rectangle is surrounded by a deep dike.

In Son Tay Town, Ha Tay Province, about 40km from Hanoi City. Body of the wall was built of hard sandstone with one gate on each side.

Hoa Lu Ancient Capital is 13km from Ninh Binh Town, Ninh Binh Province. In 968, Dinh Bo Linh ascended to the throne and took the name of King Dinh Tien Hoang and reunified the country under the name of Dai Co Viet and Hoa Lu was its capital for 41 years (968-1009).

Xuong Giang Ancient Citadel is in Xuong Giang Commune, Bac Giang City, Bac Giang Province. Xuong Giang is the name of the old citadel built by Ming troops in the 15th century.