Мечеть Сиди-Бельхассен

The Sidi Bel Hasan Mosque, also known as the Abu al-Hasan al-Tanasi Mosque, stands in the Algerian city of Tlemcen, close to the square of the Great Mosque. The building dates to 1296 and is described as an artistic landmark of the city. It is now a former mosque that has been given a new function: it houses the National Public Museum of Islamic Calligraphy in Tlemcen. It is recorded among the cultural heritage monuments of Algeria.

The building was erected in 1296 to commemorate Prince Abu Ibrahim, son of Yahya Yaghmurasen, after his death. This is shown by an inscription on an alabaster slab fixed to the western wall of the prayer hall and by two plaster inscriptions above the mihrab.

The present name is believed to derive from the judge Abu al-Hasan ibn Yakhlaf al-Tanasi, who served under Sultan Abu Said Uthman (1283-1303). The building was later withdrawn from use as a mosque and converted into a museum.