The Island of San Antón (Illa de San Antón in Galician), also called San Antonio, is a Spanish Island in the province of Pontevedra off the coast of the municipality of Redondela, connected to the Island of San Simón by a monumental three-sided bridge. Between 1596 and 1601, the Benedictine monks of Poio usef the island as a refuge from the plague, which especially affected the Pontevedra area. Later, all the buildings on the two islands were used for their activities by the Spanish Youth Organisation (Organización Juvenil Española).