Located about 20km west of Hue Citadel, Gia Long's Tomb is a relic of the Complex of Hue Monuments which was recognized by UNESCO as a World Cultural Heritage on December 11th, 1993. The Gia Long Tomb or Thien Tho Lang Mausoleum, is the tomb of King Gia Long (1762-1820), the founding king of the Nguyen Dynasty.