1248

For broader historical context, see 1240s and 13th century.

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1210s 1220s 1230s – 1240s – 1250s 1260s 1270s
Years:	1245 1246 1247 – 1248 – 1249 1250 1251

1248 by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishments and disestablishments categories
Establishments – Disestablishments
Art and literature
1248 in poetry

Events

April 26 – The Gothic chapel Sainte-Chapelle is consecrated in Paris, France.
August 15 – The foundation stone of the Cologne cathedral is laid after an older cathedral on the site burns down on April 30. Construction is completed 632 years later, in 1880.
King Louis IX of France launches the Seventh Crusade, leading an army of 20,000 toward Egypt.
Reconquista: King Ferdinand III of Castile recaptures the city of Seville from the Moors and Prince Alfonso X of Castile the city of Alicante.
Roger Bacon publishes the formula for black powder in Europe.
Pope Innocent IV grants the Croats permission to use their own language and script in liturgy (see Glagolitic alphabet).
Construction on the Alhambra palace, in Granada, Spain, is begun by the Moors.
The University of Piacenza is founded.
Tallinn (Reval) receives the Lübeck Rights.
The Dutch city of Ommen receives city rights and fortification rights from Otto III, Archbishop of Utrecht on August 25.
The Aztec Empire is established.