5. Queiamda Granda – Brazil
Usually known by the name “the Island of Snakes”, it’s estimated that there is one snake per square meter of land on the island.
The only place where the Golden Lancehead Viper is found, these snakes are so venomous that they can eat human flesh and cause death within an hour.
There are stories of the fate of people around the island, such as a fisherman who was found in a pool of his own blood covered in snake bites, or of a lighthouse keeper and his family who were killed by snakes that came in through the windows. Stay away!