Far Lands
The Far Lands is a terrain bug that appears upon the overflowing of a noise generator, most notably the low and high noise overflow 12,550,821 blocks from the origin of the Minecraft world. There are other parts of Far Lands called Farther Lands and Corner Far Lands. These parts of Far Lands are located around 1,004,000,000 blocks away from spawn point.
The Far Lands have become one of Minecraft's most well-known glitches. It has been referenced in official media, being a location/chapter in Minecraft: Story Mode, and in the name of Steve's Classic Mode Route in Super Smash Bros. Ultimate: "Journey to the Far Lands".