Heliopolis: Unveiling the History of One of the Oldest Cities in Ancient Egypt

Nov 16, 2025 0

Heliopolis, known in Ancient Egyptian as Iunu (𓉺𓏌𓊖) and in Greek as Hēlioúpolis (Ἡλιούπολις), meaning "City of the Sun", was a major city of ancient Egypt. Its traditional Egyptological transcription is Iunu, with variant transcriptions including Awnu and Annu. One of the oldest cities of ancient Egypt, occupied since prehistoric times, it greatly expanded under the Old and Middle Kingdoms. Today, it is mostly destroyed, its temples and other buildings having been scavenged for the construction of medieval Cairo.

Obelisk of Senusret I in Heliopolis.

Early History and Significance

Heliopolis was the capital of the Heliopolite or 13th Nome (province or district) of Lower Egypt and a major religious center. Its native name was iwnw "The Pillars". Some scholars reconstruct its pronunciation in earlier Egyptian as *ʔa:wnu, perhaps from older /ja:wunaw/. It appears as ʾOn (Biblical Hebrew: אֹן) in Genesis 41:45 and 50 and ʾĀwen (אָוֶן) in Ezekiel 30:17 and Amos 1:5 (apparently Baalbek).

It was the principal cult center of the solar deity Atum, who came to be identified with Ra and then with Horus as Ra-harakhty. The primary temple of the city was known as the "Great House" (Ancient Egyptian: Pr Ꜥꜣt *Par ʻĀʾat) or "House of Atum" (Ancient Egyptian: Pr I͗tmw *Par-ʼAtāma, Biblical Hebrew: פתם, romanized: Pithom). Its priests maintained that Atum or Ra was the first being, rising self-created from the primeval waters.

Religious Evolution

A decline in the importance of Ra's cult during the Fifth Dynasty led to the development of the Ennead, a grouping of nine major Egyptian deities that placed the others in subordinate status to Ra-Atum. During the Amarna Period of the Eighteenth Dynasty, Pharaoh Akhenaten introduced a kind of henotheistic worship of Aten, the deified solar disc. He built a temple named "Elevating Aten" (Wcs I͗tn), whose stones can still be seen in some of the gates of Cairo's medieval city wall. The cult of the Mnevis bull, another embodiment of the Sun, also had its altar here.

In the Septuagint in Exodus 1:11, this city is mentioned as being one of the places that was rebuilt by enslaved Hebrews. The temple of Ra was said to have been, to a special degree, a depository for royal records, and Herodotus states that the priests of Heliopolis were the best informed in matters of history of all the Egyptians.

Heliopolis as a Seat of Learning

Heliopolis flourished as a seat of learning during the Greek period; the schools of philosophy and astronomy are claimed to have been frequented by Orpheus, Homer, Pythagoras, Plato, Solon, and other Greek philosophers. Ptolemy II had Manetho, the chief priest of Heliopolis, collect his history of the ancient kings of Egypt from its archives.

The later Greek rulers, the Ptolemies, probably took little interest in their "father" Ra, as Greeks were never much of sun worshipers. The Ptolemies favored the cult of Serapis, and Alexandria had eclipsed the learning of Heliopolis. Thus, with the withdrawal of royal favour, Heliopolis quickly dwindled, and the students of native lore deserted it for other temples supported by a wealthy population of pious citizens.

Roman Era and Decline

In Roman Egypt, Heliopolis belonged to the province Augustamnica, causing it to appear as Heliopolis in Augustamnica when it needed to be distinguished from Roman Heliopolis. Its population probably contained a considerable Arabian element. Many of the city's obelisks were removed to adorn more northern cities of the Delta and Rome.

Mysteries of Egypt | Episode 3: Heliopolis - The Cult of the Sun | FD Ancient History

During the Middle Ages, the growth of Fustat and Cairo only a few kilometres away caused its ruins to be massively scavenged for building materials, including for their city walls.

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Legacy and Modern Location

The importance of the solar cult at Heliopolis is reflected in both ancient pagan and current monotheistic beliefs. Classical mythology held that the Egyptian bennu, renamed phoenix, brought the remains of its predecessor to the altar of the sun god at Heliopolis each time it was reborn. In the Hebrew Bible, Heliopolis is referenced directly and obliquely, usually in reference to its prominent pagan cult.

The ancient city is currently located about 15-20 meters (49-66 ft) below the streets of the middle- and lower-class suburbs of Al-Matariyyah, Ain Shams, and Tel Al-Hisn in northern Cairo. Some ancient city walls of crude brick can be seen in the fields, a few granite blocks bearing the name of Ramesses II remain, and the position of the great Temple of Ra-Atum is marked by the Al-Masalla obelisk.

Obelisks of Heliopolis

A major surviving remnant of Heliopolis is the obelisk of the Temple of Ra-Atum erected by Senusret I of the Twelfth Dynasty. Other obelisks originating in Heliopolis were taken by the Romans after their conquest of Egypt.

The taller 25 m (82 ft) Vatican obelisk, was taken by Emperor Caligula, and now stands in St. Peter's Square, the only ancient obelisk in Rome never to have fallen. Emperor Augustus took the Obelisk of Montecitorio from Heliopolis to Rome, where it remains. Two smaller obelisks called Cleopatra's Needles now in London and New York were also originally from Heliopolis.

Vatican Obelisk in St. Peter's Square.

The following table provides a summary of the obelisks that originated from Heliopolis and their current locations:

Obelisk	Original Location	Current Location	Notes
Obelisk of Senusret I	Temple of Ra-Atum, Heliopolis	Al-Matariyyah, Cairo	Major surviving remnant of Heliopolis
Vatican Obelisk	Heliopolis	St. Peter's Square, Rome	Taken by Emperor Caligula
Obelisk of Montecitorio	Heliopolis	Rome	Taken by Emperor Augustus
Cleopatra's Needle	Heliopolis	London and New York	Two smaller obelisks