Girona Cathedral, also known as the Cathedral of Saint Mary of Girona (in Catalan: Catedral de Santa Maria de Girona or simply Catedral de Girona), is a Roman Catholic church located in Girona, Catalonia, Spain. It is the seat of the Roman Catholic Diocese of Girona. The cathedral's interior includes the widest Gothic nave in the world, with a width of 22 metres (72 ft), and the second-widest of any church after that of St. Peter's Basilica