CC BY-SA 4.0- The Many Lives of Null Island (stamen.com)
At risk of ruining the secret for you, Null Island is a long-running inside joke among cartographers. It is an imaginary island located at a real place: the coordinates of 0º latitude and 0º longitude, a location in the Atlantic Ocean off the coast of Africa where the Prime Meridian meets the Equator, hundreds of miles from any real dry land.