The Italian Catholic Diocese of San Marino-Montefeltro was until 1977 the historic Diocese of Montefeltro. It is a Latin suffragan of the Archdiocese of Ravenna-Cervia. The current diocese includes all the parishes of San Marino. It has its collegiate cathedral episcopal see S. Bartolomeo, dedicated to the Apostle St. Bartholomew, in Pennabilli, Rimini, Emilia Romagna, and two Co-Cathedrals : Concattedrale di S. Leo Concattedrale di S. Leo, in San Leo, Rimini, a former see's former cathedral. Minor Basilica and World Heritage Site Basilica Concattedrale di San Marino, in Città di San Marino, San Marino.