Alfonso de Borja, Pope Calixto III Historical milestone · Canals, La Costera, Valencia Image of Canals, not of the place itself. Alfonso de Borja was born on 31 December 1378 at the Torre de Canals, then a farmstead of the municipal district. A jurist and bishop of Valencia, he was elected pope in 1455 under the name Calixto III and opened the Roman path of the Borja family. 1378 Photo: 19Tarrestnom65 (CC BY-SA 4.0) What to see and do in Canals