1267

For broader historical context, see 1260s and 13th century.

Years: 1264 1265 1266 - 1267 - 1268 1269 1270
Decades: 1230s 1240s 1250s - 1260s - 1270s 1280s 1290s
Centuries: 12th century - 13th century - 14th century 1267 state leaders

Events

King Afonso III of Portugal and King Alfonso X of Castile sign a treaty determining the southern border between Portugal and Spain as the Guadiana River, a border that remains to this day.
The Second Barons' War in England ends, as the rebels and King Henry III of England agree to peace terms as laid out in the Dictum of Kenilworth.
King Henry III of England acknowledges Llywelyn ap Gruffudd's title of Prince of Wales in the Treaty of Montgomery.
Emperor Baldwin II of Constantinople gifts the Principality of Achaea to King Charles I of Sicily in the Treaty of Viterbo in the hopes that Charles could help him restore the Latin Empire.

Roger Bacon completes his work Opus Majus and sends it to Pope Clement IV, who had requested it be written; the work contians wide-ranging discussion of mathematics, optics, alchemy, astronomy, astrology, and other topics, and includes what some believe to be the first description of a magnifying glass. Bacon also completes Opus Minus, a summary of Opus Majus, later in the same year.
The leadership of Vienna forces Jews to wear Pileum cornutum,a cone-shaped head dress, in addition to the yellow badges Jews were already forced to wear.
In England, the Statute of Marlborough is passed, the oldest English law still (partially) in force.

The "Grand Capital" is constructed in Khanbaliq (present-day Beijing by Kublai Khan, having moved the capital of the Mongol Empire there three years prior.
Malik ul Salih establishes Samudra Pasai, the first Muslim state in Indonesia.
Spain attempts an invasion of Morocco, but the Marinids successfully defend against the invasion and drive out Spanish forces.