It’s no wonder this “smoke that thunders” is considered one of the seven natural wonders of the world and is a UNESCO World Heritage site. Discovered first by David Livingstone in 1855 and named after Queen Victoria of England, Victoria Falls lies on the border between Zambia and Zimbabwe. Zambians call it ‘Mosi-oa-Tunya’ – “the smoke that thunders” – while Zimbabweans call it Victoria Falls. It’s the largest singular waterfall in the world spanning a width of 1.7km, a height of 108m, and an average flow of 1 million liters per second. The resulting spray, or smoke, can sometimes be seen from up to 25 miles away.