The ceding of the Lanzada saltworks to the chapter of Compostela Historical milestone · Sanxenxo, Salnés, Pontevedra Image of Sanxenxo, not of the place itself. Alfonso III, who reigned between 866 and 910, granted the salt works of A Lanzada to the church of Santiago; salt was for centuries the primary wealth of this stretch of coast and explains the early ecclesiastical presence in the area. 886 Photo: Iago Casabiell González (CC BY-SA 4.0) What to see and do in Sanxenxo