Steps hewn out of the rock lead 38m up to the entrance of the rock church of Our Lady. Dug out and decorated in the 13C and 14C, it is now on Unesco's World Heritage list. The interior is adorned with a remarkable set of frescoes, depicting scenes from the Passion and the life of St John the Baptist and expressively portraying benefactors and saints. The church, which has "windows" and a balcony, offers a splendid view of the valley.