'Amr ibn al-'As
The location for the mosque was the site of the tent of the commander of the Muslim army, general Amr ibn al-As. One corner of the mosque contains the tomb of his son, 'Abd Allah ibn 'Amr ibn al-'As. Due to extensive reconstruction over the centuries nothing of the original building remains, but the rebuilt Mosque is a prominent landmark and can be seen in what today is known as Old Cairo. It is an active mosque with a devout congregation, and when prayers are not taking place, it is also open to visitors and tourists.