The Ho Dynasty Citadel, a national heritage site of Vietnam in the northern province of Thanh Hoa, was acknowledged as a world cultural heritage site by UNESCO .
Built about 600 years ago, with four gates facing south, north, east and west, the Citadel of the Ho Dynasty is stone military architecture with great cultural and historical value.
It was the capital of Vietnam from 1397 to 1407 and is located in Vinh Long and Vinh Tien communes, Vinh Loc district.
The citadel includes three sections: La Thanh and bamboo hedge; moat and citadel wall; and an internal area with a number of palaces connected to one another by marble-paved roads.
Outside the citadel there is Bao Thanh (Ly Cung) palace, which is known as the altar of the sky and the earth.
The citadel was built using huge square stone stabs which are 5.1 meters long, 1.59 meters wide and 1.3 meters high. They overlap each other without any glue or attaching materials and have stood erect for 600 years.
The site has been excavated since 2004. Archeologists have found out many artifacts made from baked bricks, stone marbles, tiles shaped like dragons, stone bullets, arrows and nails and household pottery inside the citadel.
In September 2009, under the direction of the government, the People’s Committee of Thanh Hoa Province completed a scientific profile proposing UNESCO to recognize the Ho Dynasty Citadel as a world cultural heritage site.