Treaty of Almizra Curiosity · Camp de Mirra, el/Campo de Mirra, L'Alt Vinalopó, Alicante The Treaty of Almizra, signed on 26 March 1244 between the Crown of Aragon and the Crown of Castile, fixed the boundaries of the Kingdom of Valencia and is commemorated every year in El Camp de Mirra. It was agreed by James I of Aragon and Infante Alfonso of Castile —his son-in-law and future Alfonso X the Wise— and it stipulated that the lands south of the Biar-Busot-El Campello line would remain reserved for Castile. The pact replaced the treaties of Tudilén (1151) and Cazorla (1179), which had been breached by both sides: James I had conquered Villena in 1240, together with Caudete and Sax, which belonged to Castile, and Infante Alfonso laid claim to Xàtiva in 1244, a stronghold of the Crown of Aragon, thereby forcing a new agreement that would respect the boundaries of Cazorla. Photo: Enrique Íñiguez Rodríguez (Qoan) (CC BY-SA 3.0) What to see and do in Camp de Mirra, el/Campo de Mirra