Berat is a city on the Osum River, in central Albania. It's known for its white Ottoman houses. On a hilltop, Berat Castle is a huge compound now inhabited by townspeople. Within its walls are Byzantine churches, the Red Mosque and the Onufri National Museum, with Christian icons. East is the Ethnographic Museum, in an 18th-century house, displaying traditional crafts and part of a reconstructed medieval bazaar.