Cao Bang, Vietnam

Cao Bang, in the north of Vietnam, has some of the most impressive natural sites in the country, but without the crowds. Start at Phat Tich Truc Lam, a temple near the Chinese border that offers wonderful views over the region’s rolling hills. Ban Gioc Waterfall – one of the most magical waterfalls in Southeast Asia and the largest in Vietnam – cascades over multiple tiers and can be visited on a boat trip or bamboo raft. The nearby Nguom Ngao Cave system extends for several kilometers underground and is home to many breathtaking stalactites and stalagmites.