E . City of the Sun), in Egyptian On , one of the oldest and most sacred cities of Egypt; was situated about 10 m. N. of Cairo, on the eastmost branch of the Nile; it was the centre of Egyptian learning; Solon and Plato are said to have studied there, and Potiphar was one of its chief priests; the famous obelisk
tands near; and
ow on the Thames Embankment, was originally of this city. Also the name of Baalbec.