Phong Nha-Ke Bang National Park is a UNESCO World Heritage Site known for its diverse geological landscapes. Begin your adventure at the historic Ben Hai River and take in the scenic vistas from the Hien Luong Bridge. If your tour takes place on odd-numbered days, embark on a river cruise within Phong Nha Cave, one of the oldest cave systems in Southeast Asia. Conversely, on even-numbered days, marvel at the beauty of Paradise Cave, where stalagmites are illuminated by natural skylights.