The island of San Simón as a lazaretto and prison Historical milestone · Redondela, Vigo, Pontevedra Image of Redondela, not of the place itself. It was a leper lazaretto between 1830 and 1927 and, after the coup of 1936, a concentration camp and prison until 1943, with thousands of prisoners crammed together. The island was declared a Bien de Interés Cultural in 1999. 1830-1943 Photo: HombreDHojalata from Spain (CC BY-SA 2.0) What to see and do in Redondela