Located in central Albania, Berat bears witness to the coexistence of various religious and cultural communities down the centuries. It features a castle, locally known as the Kala, most of which was built in the 13th century, although its origins date back to the 4th century BC. The citadel area numbers many Byzantine churches, mainly from the 13th century, as well as several mosques built under the Ottoman era which began in 1417.