Shown here is the Temple of Isis at Philae. The image dates to around 1905. The island of Philae was located in the Nile River at the First Cataract, south of the present Aswan dam; it is now totally submerged, following the construction of the Aswan dam.This temple, thought to be the single most beautiful preserved ancient Egyptian temple, housed a mammisi, or birth house, built to celebrate the birth of Harpocrates to Isis and Osiris. The Isis temple is of Ptolemaic date (304 b.c.e.–30 b.c.e.), specifcally about 280 B.C.