Jacobus de Voragine compiles his work, the Golden Legend, a late medieval best-seller.
Nicola Pisano sculpts the pulpit of the Pisa Baptistery.
Germanmusical theorist Franco of Cologne publishes Ars Cantus Mensurabilis, in which he advances a new theory of musical notation in which the length of a musical note is denoted by the shape of that note, a system still used today.
The mosaicChrist between the Virgin and St Minias is made on the facade of Florence's Basilica di San Miniato al Monte.
The advent of the Age of the Holy Spirit predicted by Joachim of Fiore according to his interpretation of Revelations Ch 6.
May 21 - Kublai sends his envoy Hao Jing to negotiate with the Song Dynasty Chancellor Jia Sidao, after the small force left by Kublai south of the Yangzi River is destroyed by a Chinese army of the Southern Song Dynasty. Chancellor Jia Sidao ordered to imprison the entire embassy of Kublai. This slight would not be forgotten by Kublai, but he was unable to assault the Song due to the civil war with his rival brother Ariq Böke.
September 3 - The Mamluks defeat the Mongols at the Battle of Ain Jalut in Palestine, marking their first decisive defeat and the point of maximum expansion of the Mongol Empire.