Stock Photo: Asia, Vietnam, Hue Stele at the royal tomb of Thieu Tri Designated a UNESCO World Heritage Site in 1993, Hue is honoured for its complex of historic monuments Emperor Thieu Tri, the son of Minh Mang, reigned just seven years and did not have the opport. Asia, Vietnam, Hue Stele at the royal tomb of Thieu Tri Designated a UNESCO World Heritage Site in 1993, Hue is honoured for its complex of historic monuments Emperor Thieu Tri, the son of Minh Mang, reigned just seven years and did not hav