The Castle of Xavier (Basque: Xabierko gaztelua; Spanish: Castillo de Javier) is located on a hill in the town of Javier (Navarre, Spain), 52 km east of Pamplona and 7 km east of Sangüesa. Built in the 10th century, this castle was the birthplace and childhood home of Saint Francis Xavier, son of the Lords of Xavier, hence his surname.