The Red Mosque is a ruined mosque in Berat Castle, Berat, Albania. It is a Cultural Monument of Albania since 1961.The mosque is located just outside the citadel within the castle of Berat. The mosque was built in the 15th century and was one of the oldest mosques in the country. It was probably built shortly after the conquest of Berat by the Ottomans in 1417. The oldest written record dates from 1431/32. The original names were Mosque of the ruler and Mosque of conquest. The basic dimensions were 9.9 to 9.1 meters and had a wooden roof. It was built with red bricks and limestone. The minaret is unusually on the left of entrance.