Loreto It is about 14 Km from Sirolo .Loreto Is famous for being the seat of the Basilica of the Holy House , one of the oldest and most important Marian pilgrimage sites of the Catholic world . Castelfidardo It is about 12 Km from Sirolo Castelfidardo is world famous for companies active in the production of accordions , including Paolo Soprani , thanks to which also feeds a discreet tourism. RecanatiIt is about 21 Km from Sirolo Citta ' Birthplace of Giacomo Leopardi , here is the very supplied his father's library . Numana Bordering Sirolo A Numana is located a known state Antiquarium , which displays kits of Piceno and Roman tombs . Remarkable is the goods from the tomb of the so-called " Queen picena " , found near Sirolo . Ancona It is about 18 Km from Sirolo Overlooking the Adriatic sea, boasts one of the major Italian ports . art city full of monuments and 2400 years of history , is one of the main economic centers of the region , as well as its main urban center in size and population. Genga It is about 75 Km from Sirolo The Frasassi caves are underground caves that are located in the municipality of Genga , in the province of Ancona . The cave complex falls within the Regional Natural Park of Gola della Rossa and Frasassi . The complex e'formato by a series of caves the first of which can be visited from the current input, the Abyss Ancona , huge cavity that has an extension of 180 x 120 m and a height of 200 m ; is so large ( over 2 million m3 of volume ) than inside it could be smoothly Milan Cathedral .