Forno da Santa (the Saint's Oven) Curiosity · Allariz, Allariz - Maceda, Ourense An underground chamber beneath the unfinished basilica of Augas Santas, interpreted as a castro sauna reused as a place of Christian worship; tradition identifies it with the oven where Saint Mariña would have been burned. Photo: Re Fresh Vigo (CC BY-SA 4.0) What to see and do in Allariz