Ban Gioc Waterfall is one of Vietnam’s most impressive natural sights. Located in the northeastern province of Cao Bang, the falls are 30 metres high and 300 metres across, making Ban Gioc the widest (but not the highest) waterfall in the country. The falls occur on the Quay Son River, a beautiful jade-blue body of water flowing from China through a pastoral landscape of rice fields and bamboo groves surrounded by limestone pinnacles. Despite improved road access and public transportation connections, and the popularity of several recent viral drone videos showcasing the majesty of the falls, Ban Gioc is still a relatively off-the-beaten-path sight. Mass tourism has yet to arrive and, outside of weekends and public holidays, there’s rarely more than a trickle of foreign and domestic visitors.