Amr Ibn Al-Aas Mosque in Egypt.

Amr ibn al-Aas Mosque is located in Cairo, Egypt, and was named after the Arab Muslim leader Amr ibn al-Aas, and was originally built in 641 to 642 AD as the center of Egypt's newly founded capital, Fustat. The original structure was the first mosque built in Egypt and one of the first in Africa. For 600 years, it was an important center of Islamic learning until it was replaced by the Al-Azhar Mosque in Islamic Cairo, and during the 20th century, it was the fourth-largest mosque in the Islamic world.