Phong nha - Ke bang National Park(World Heritage Site)
- Information
http://en.wikipedia.org/wiki/Phong_Nha-Ke_Bang_National_Park
http://www.phongnhakebang.vn/en/
- Dong hoi city
http://en.wikipedia.org/wiki/%C4%90%E1%BB%93ng_H%E1%BB%9Bi
- Guest house:
http://www.lenguyentravel.com/phongnhahotels.html
