Djamaa al-Jaza'ir is a complex that includes the new great mosque of Algiers. It is the largest mosque in Africa and the third-largest mosque in the world after Sultan Qaboos Grand Mosque in Muscat, Oman; and Imam Riza Shrine Complex in Mashhad, Iran.

With a surface area of 400,000 m², the complex can accommodate 120,000 people. The capacity of the prayer hall alone is about 40,000 worshippers. In addition to the mosque, Jamaa al-Jaza'ir complex includes a cultural center, religious school, library, public square, fire station, and staff accommodation.

Measuring 265 meters high, the minaret of Djamaa al-Jaza'ir is the highest minaret in the world, right before the minaret of Hassan II Mosque in Casablanca, Morocco.

The construction of Djamaa al-Jaza'ir started in 2012 and completed in May 2019. This gigantesque project cost almost 2 billion USD.