Sørvágsvatn lake, Island of Vágar, Faroe Islands (© Anton Petrus/Getty Images)

Nature has its tricks and Sørvágsvatn is one of its best. This is an optical illusion in the Faroe Islands, an autonomous administrative division of the Kingdom of Denmark. Also called Leitisvatn, this lake on the island of Vágar appears to float far above the ocean. In reality, it sits less than 30 metres above sea level. As the largest lake in the Faroes, Sørvágsvatn has a surface area of about 3.4 square kilometres and feeds the Bøsdalafossur waterfall, where its waters pour dramatically into the sea.