1) Snake Island, Brazil
Snake Island, or Ilha da Queimada Grande as it’s officially known, is located off the coast of Brazil, approximately 18 miles from the coast of São Paulo. A 106-acre island populated with patches of rainforest and enjoying a temperate climate, Snake Island might have become a popular day-trip for tourists to São Paulo. If it wasn’t for all the snakes, that is. Snake Island is home to over 4,000 of the world’s most deadly species of snake. A rare species of pit viper known as the Golden Lancehead Viper, the snakes on Snake Island possess venom that can actually decompose human flesh. The Golden Lancehead Viper is responsible for 90% of the snake-related deaths in Brazil and on Snake Island there are said to be between one and five snakes per metre of land, a nightmarish image. The inhabitants of Snake Island are so dangerous that the Brazilian government banned anyone from visiting the island, a ban that is enforced by the Brazilian Navy.