The director of the Phong Nha-Ke Bang Tourism Centre, Le Thanh Loi, said on July 23 that the site was granted the status by TripAdvisor, one of the biggest tourism promotion websites in the world.
To qualify, locations must maintain an overall rating of four or higher out of a possible five as reviewed by travellers on TripAdvisor. Additional criteria include the volume of reviews.
With a rating of 4.5, Phong Nha Caves located inside the Phong Nha-Ke Bang National Park came out top.
"Such an honour highlights efforts of the staff at Phong Nha-Ke Bang Tourism Centre as well as the National Park," said Loi.
"The advice of foreign experts has turned Phong Nha Caves into a heaven on earth."
Covering an area of 85,754ha, the Phong Nha-Ke Bang National Park was recognised as a World Natural Heritage Site by UNESCO in 2003.