Castle of Tudela i capella de Sant Grau Monument · Sant Gregori, Gironès, Girona Remains of a fortification of the 10th-11th centuries at the top of the Puig de Sant Grau, beside the chapel of the same name documented since 1548, at a point with wide views over the Vall de Llémena. Photo: Viquipèdia / Wikimedia Commons (CC BY-SA) What to see and do in Sant Gregori