Senegal's Lake Retba, or as the French refer to it Lac Rose: harmless halophilic bacteria make the water pink. Lake Retba has a high salt content, much like that of the Dead Sea, allowing people to float effortlessly in the massive pink water.
To Sua Ocean Trench in the Lotofaga village on the south coast of Upolu, Samoa. o Sua is a giant hole in Lotofaga that was converted into a swimming pool with water flowing through a lava-tube tunnel. WANT TO GO!