Located not far from Buenos Aires, this mysterious and weird island is breathtaking. Some say this is an entrance to an alien base, some say this is a floating island that magically rotates on its own axis. Some, however, offer a much more mundane and, most likely, correct explanation that this island is formed by a floating plant called Camalotes (Eichhornia crassipes). This plant is very common in the area. At any rate, here is a video about it.
Here is also a post about it. Judge for yourself which explanation appeals to you the most.
Name: El Ojo Island
Lat, Long: -34.252167, -58.829833
Location: Campana, Buenos Aires Province, Argentina
