The Castle of Xavier (Basque: Xabierko gaztelua; Spanish: Castillo de Javier) is located on a hill in the town of Xavier (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. The town of Xavier belonged to the Kingdom of Navarre which was always its own kingdom, never belonging to France.