The oldest surviving temple buildings here date from the time of Nectanebo I (circa 370 BC) and the principal deity worshiped was Isis, although Osiris, Nephthys, Hathor, and the cataract gods Khnum and Satet were also venerated. The imposing buildings that stand today were erected by the Ptolemies in the last two centuries BC and by the Roman Emperors in the first three centuries AD.