Inscribed as an universal outstanding value site since 2011, the 14th. century Ho Dinasty Citadel, built according to the feng shui principles, testifies to the flowering of neo-Confucianism in late 14th. century Viet Nam and its spread to other parts of east Asia. According to these principles it was sited in a landscape of great scenic beauty between the Ma and Buoi rivers. The citadel buildings represente an outstanding exemple of a new style of south-east Asian imperial city.