According to these principles, it was situated in a landscape of great scenic beauty on an axis joining the Tuong Son and Don Son mountains on a plain between the Ma and Buoi rivers. 

The stones of the citadel weighing up to a ton each are laid together without adhesives.

According to historical documents, in 1397 the country was in danger of the Minh invading from the north. Ho Quy Ly selected this location due to its defensive strategic location.
The northern gate of the citadel shows little wear and tear after 600 years.
The western gate of the citadel looks as magnificent as the day it was erected.
The lost headed dragon was placed in the centre of the current castle. 

Through more than 600 years history and weather, the wall system has remained relatively intact, though it took only about three months to construct.

The citadel was recognized June 27, 2011, as a world cultural heritage by UNESCO.

This is where annual ceremonies were conducted by the people of the Ho Dynasty to pray for a peace, good weather and prosperity.
The Ho citadel is located in an area between the Ma and Buoi rivers.
This house was built in 1810, and recognized by UNESCO as one of 10 most traditional houses of Vietnam.

This stone commemorates the memory of the wife of the person who built the east wall of the citadel.