Excavation in Ho Dynasty Citadel's central part (Photo: nld.com.vn) Unique architecture traces have been detected at the centre of the Ho Dynasty Citadel, a UNESCO-recognised World Cultural Heritage site, during an excavation during the past two years, reported the Institute of Archaeology and the Ho Citadel Heritage Conservation Centre on December 14. In the 2020-2021 period, the Institute of Archaeology and the Ho Citadel Heritage Conservation Centre have dug six excavation holes with a total area of 25,000sq.m. The excavation has revealed four clusters of vestiges dating from the Tran Dynasty (1226-1400) and Ho Dynasty (1400-1407), and three architectural clusters of the Later Le Dynasty (1428–1788). Notably, architectural vestiges of the Tran - Ho dynasties were found in excavation holes in the central, Southeast and Southwest parts on an area of about 16,000sq.m. According to archaeologists, the found vestiges are thought to belong to the main hall of the Ho Dynasty Citade