1256

For broader historical context, see 1250s and 13th century.

Years: 1253 1254 1255 - 1256 - 1257 1258 1259
Decades: 1220s 1230s 1240s - 1250s - 1260s 1270s 1280s
Centuries: 12th century - 13th century - 14th century 1256 state leaders

Events

Remains of one of 23 Hashshashin strongholds at Alamut, which fell in 1256 to the Mongols.

April 13 - Pope Alexander IV issues a papal bull constituting the Augustinian monastic order.
The city of Lviv, in present-day Ukraine, is founded by Danylo King of Rus.
Theodore II Lascaris, Byzantine Emperor (in exile in the Empire of Nicaea), successfully concludes a military campaign started a year earlier to recover Thrace from the Bulgarians.

October - Mongol commander Baiju (operating under Hulagu Khan's command) leads his forces in a victory over Kay Ka'us II of the Sultanate of Rüm, thereby capturing Anatolia.
December 15 - Hulagu Khan captures and destroys the Hashshashin stronghold at Alamut in present-day Iran.
Hulagu Khan establishes the Ilkhanate dynasty of Persia, which will become one of four main divisions of the Mongol Empire.
The Japanese [[|Kencho|Kenchō]] era ends, and the Kōgen era begins.