Cao Bang: Phja Oac - Phja Den National Park
(TITC) – As part of in UNESCO Non Nuoc Cao Bang Geopark, Phja Oac - Phja Den National Park (73km from Cao Bang City) owns beautiful natural landscape, pure air. The park has great advantages for ecotourism development. Today there are still vestiges of villas and guesthouses built by the French since the early 20th century.