The Mongol Empire is the largest contiguous land empire in history.

World History

T here was a time when the sun never set on the British Empire and all roads led to Rome, but there has never been a larger contiguous land empire than that of the Mongols. Established in 1206 by Genghis Khan, the empire eventually reached a size of at least 9 million square miles. And to call this unlikely would be an understatement.

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By the Numbers

Year the Mongol Empire ended

1368

Estimated population of the Mongol Empire at its peak

100 million+

Did you know?

No one knows where Genghis Khan is buried.

Though Genghis Khan was one of history's most consequential figures, there are two things no one knows about the famed leader: what he looked like and where he's buried. The first is easy enough to explain, as he lived nearly 1,000 years ago and contemporaneous accounts of his appearance differ. The latter is a bit more unusual. Genghis wished to be buried in secret, and the army that escorted his body is said to have slain anyone it came across en route to his final resting place, lest those passersby tell anyone what they saw. After the burial, those same soldiers rode 1,000 horses over Genghis' grave to bury any trace of it along with him. There are also stories, most likely untrue, that the enslaved people responsible for burying him were then slaughtered so they couldn't share their knowledge, and that the guards who carried out this act were themselves killed by a second group of soldiers, who then took their own lives. Though the exact location of the grave remains a mystery, scholars believe Genghis is buried somewhere near Burkhan Khaldun, a mountain considered sacred by the Mongols.