- Mar 1 Hulagu Khan, grandson of Genghis, conquers Damascus
- May 5 Kublai Khan, grandson of Genghis Khan, becomes ruler of the Mongol Empire.
- May 21 Hao Jing, envoy of Mongol leader Kublai Khan imprisoned by order of the high Chancellor of China, Jia Sidao at the Song Dynasty court of Emperor Lizong while attempting to negotiate with the Song
- Sep 3 Battle of Ain Djaloet, Palestine defeats Mongols army
- Sep 4 Battle at Montaperti, Tuscany, between rival factions the Guelphs and Ghibellines
- Oct 24 Saif ad-Din Qutuz, third Mamluk sultan of Egypt, is assassinated by Baibars, by a fellow Mamluk leader, who seizes power for himself.
- Oct 24 The spectacular Cathedral of Chartres is dedicated in the presence of King Louis IX of France; the cathedral is now a UNESCO World Heritage Site.
- Kublai Khan
Mongolian Emperor and Founder of the Yuan Dynasty