Qus (east bank of the Nile), a busy district capital on the site of ancient Apollinopolis Parva, where the god Haroeris (one of the forms of Horus) was worshiped. In later times, according to the 14th C. traveler Abulfida, the town was second in size only to Fustat (Cairo) and was the chief center of the trade with Arabia. Nothing is now left of
the ancient city but heaps of rubble and a few inscribed stones built into houses. The El-Amri Mosque, one of the few notable examples of Muslim architecture in Upper Egypt, has a fine pulpit of 1155 and a basin made from a single ancient stone bearing the name of Ptolemy II Philadelphus.