Piri Reis Map
In 1513 Ottoman admiral and cartographer Piri Reis compiled a world map depicting continents and coastlines with some accuracy which were thought to be undiscovered at the time. Most notable, the map depicted the continent of Antarctica (discovered in 1818) as it was hundreds of years earlier.
The Piri Reis map describes the continent of Antarctica before it was covered in ice. This has led to some researchers hypothesizing that advanced knowledge was handed down from a prehistoric sea-faring civilization. Interestingly Antarctica and South America are shown connected by a land bridge.