2. Grotte di FrasassiGenga The Frasassi Caves are a remarkable karst cave system in the municipality of Genga, Italy, in the province of Ancona, Marche. They are among the most famous show caves in Italy. From Wikipedia, the free encyclopedia.
3. Forte di San LeoSan Leo The Fortress of San Leo is a castle on the border of the Romagna and Marche; the castle is best known as the site where Count Cagliostro died. It was one of the palaces owned by Federico da Montefeltro and his wife Battista Sforza and was a fortified, palatial retreat. It is now a museum. From Wikipedia, the free encyclopedia.