The Kingdom of Tlemcen was a Moorish kingdom in what is now the northwest of Algeria, whose territory stretched from Tlemcen to the Chelif bend and Algiers, and reached at its zenith the Moulouya river to the west, Sijilmasa to the south and the Soummam river to the east. It lasted from the collapse of the Almohad Caliphate in 1236 until it came under Ottoman rule in 1554. It was ruled by sultans of the Zayyanid dynasty. The capital of the kingdom, Tlemcen, lay on the main east-west route between Morocco and Ifriqiya.