El Emir Abdelkader mosque is the second largest mosque in Algeria after Djamaa al-Jaza'ir in Algiers. It carries the name of Emir Abd al-Qadir, the Algerian resistance leader to the French occupation in the 19th century.

Built from 1972 to 1994, this mosque is in fact an Islamic complex including the Emir Abdelkader Mosque and the Islamic University of Constantine.

The complex consists of three parts: the main prayer hall, which is dominated by a large dome, 20 meters in diameter; and the ancillary prayer hall, which is centered around a courtyard; and the Islamic University.

In addition to the main building, the mosque is adorned with two minarets, each 107 meters high, and fronted by a gigantic esplanade of about 1 hectare.