- ancient city in the Nile delta, just north of where Cairo now stands: center for the worship of the sun god Ra
- ancient city on the site of modern Baalbek
Origin of HeliopolisClassical Greek H?liopolis, literally , city of the sun ; from h?lios (see Helios) + polis, city
- An ancient city of northern Egypt in the Nile River delta north of modern Cairo. It was the center of worship of the sun god Ra until the rise of Thebes (c. 2100 BC). Its importance as a historical repository with famed schools of philosophy and astronomy declined after the founding of Alexandria in the fourth century BC. Two of its obelisks, both known as Cleopatra's Needle, are now in London and in New York City's Central Park.
- See Baalbek.