Jerry Gretzinger has worked for 30 years on an imaginary map that grows each day based on the predictions of a deck of cards.

Mneneon, a mathematician and engineer, recently used a pen to draw borders around his birthmarks, creating a one-of-a-kind map of an imaginary world, reports My Modern Met.

Population: 192k. Historical fantasists and world-builders have constructed a haven to display often first-rate maps of fantasy worlds and alternative histories, complete with scrolls of mythology.

Mneneon found an interesting worldbuilding idea in his own birthmark. He took a pen to his arms and outlined his birthmark, creating a map of his very own — very personal — world.

A tiny blot of a landmass off the western coast of Ireland is curiously labeled "Imaginary Isle of O Brazil" on cartographer Thomas Jefferys's 1768 "Chart of the Atlantic Ocean." A 21st-century ...

This guy Jerry [Gretzinger] has been mapping this imaginary world for 35 years, and he’s still working on it. The map is 55 feet across at least, at this point.

And Kircher’s map was one of the earliest ones nestled into an otherwise accurate depiction of the world. And perhaps most important is that once Atlantis’s appearance was established it ...

The Department of Foreign Affairs said it appreciated the opportunity to watch "Barbie" to "ascertain if the depiction of the imaginary world map is inimical to the national interest." ...

History nerd? Got maps on your wall? The Map Myths website allows you to explore the mythical places on ancient maps.