The National Park of Phong Nha - Ke Bang is situated about 500 km from Hanoi to the south, 50 km to the northwest of Dong Hoi.

The total area of the national parks is 343,300 hectares, including 123,300 hectares of the core area and 220,000 hectares of the buffer zone. Phong Nha is known as the "kingdom of caves," with many mysterious landscapes, and magnificent caves like castles in the heart of limestone mountains.

There are about 300 large and small caves in Phong Nha - Ke Bang National Park, divided into three main systems: Phong Nha cave system, Vom cave system and Ruc Mon cave system.

Visitors can visit the park from 7 am to 5 pm on weekdays. The Son River wharf where tourists begin their trip to caves.

In 2003, Phong Nha - Ke Bang National Park was recognized by UNESCO as the World Natural Heritage site based on the criteria of geology and geomorphology. In 2015, the UNESCO recognized this site as the World Natural Heritage for the second time, based on biodiversity and ecological criteria.

The most beautiful and well-known caves in Phong Nha - Ke Bang are Phong Nha, Tien Son, Thien Duong, Toi, En, Khe Ry and Son Doong - the largest cave in the world.

The unspoiled landscape of Phong Nha - Ke Bang.