Cao Bang
Cao Bang is the capital of Cao Bang province in northern Vietnam. While unremarkable in and of itself, 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 Bang is also a refreshing glimpse into a city that exists solely on its own terms.
There are no rail connections, making buses the most convenient way to get to Cao Bang. A bus from Lạng Son on the China-Vietnam border take 4-5 hours and costs 90,000 dong. There are also buses from the neighboring provinces in northern Vietnam.