San Leo, the historic capital of Montefeltro, is situated in the heart of the Valmarecchia, on a 650 metre-high hill. Because of its
impregnable position, the town has always been at the centre of numerous civil, military, religious and political events.
The village is renowned because it hosted the mysterious and fascinating "alchemist" Giuseppe Balsamo, better known as the Count of Cagliostro, the most famous prisoner of the San Leo fortress.
The most important monuments are: the Fortress, the Parish Church, the Cathedral, the Franciscan Convent of St. Igne.