Diocese of San Marino-Montefeltro
…church of San Leo, located 18.4 km or 11.4 mi northeast of Pennabilli, in the town of that name, once the diocese's cathedral. the minor basilica, the Basilica di San Marino, in the City of San Marino, a World Heritage Site. The earliest mention of Montefeltro, as Montem Feretri, is in the diplomas by which first Holy Roman…