Siege of Bukhara
Feb 15 Khwarezmian city of Bukhara taken by Genghis Khan's Mongol army after a 12-day siege, with the death of about 30,000 of its citizens
- Apr 26 German king Frederick II grants bishops sovereign rights
- May 16 English King Henry III lays the foundation stone for a new Lady Chapel, start of the rebuilding of Westminster Abbey, in London
- Aug 8 Sweden is defeated by Estonian tribes in the Battle of Lihula
- Nov 22 Frederick II crowned Holy Roman Emperor in Rome by Pope Honorius III