The Ambra Castle (Spanish: Castillo de Ambra, Catalan: Castell d'Ambra)
Pego was founded as a Christian settlement on a hill in the widely scattered Uxola settlement, which was under the power and care of the Ambra Castle. This castle, located about two kilometers as the crow flies southwest of the current town center on the rocky ridge of the Montaña de Abra in the Sierra de Migdia, dominated the access to the Ebo Valley (La Vall d'Ebo) and controlled the area as far as the marshes of Pego-Oliva. The Muslims native to this area probably took building materials from this castle to build the city walls and towers. The Ambra Castle is of Arab origin, and construction began in the second half of the 12th century. After the uprisings of al-Azraq at the end of the 13th century, 20 houses were built within the castle walls. They served as accommodation until the construction of the village of Pego began in 1280.