Cao Bang is in northern Vietnam. Cao Bang is an easy-going gateway to the surrounding lakes, minority villages, karst peaks, caves, and the Ban Gioc Waterfall on the Chinese border. Just 30km from China, it is an excellent stop for travelers coming from or going to the Pingxiang border crossing. For those tired of the tourist circuit of coastal Vietnam, Cao Bằng is also a refreshing glimpse into a city that exists solely on its own terms.