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Heliopolis

Heliopolis was one of the oldest and most important cities of ancient Egypt, known in Greek as the “City of the Sun.” It was a major religious centre devoted especially to the sun god Re, and later to Atum-Re, rather than a major political capital.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Heliopolis was one of the oldest and most important cities of ancient Egypt, known in Greek as the “City of the Sun.” It was a major religious centre devoted especially to the sun god Re, and later to Atum-Re, rather than a major political capital. The ancient site lay northeast of modern Cairo, around the area now associated with Ain Shams and El-Matariya.

History

Heliopolis was occupied from prehistoric times and rose to major prominence during the Old and Middle Kingdoms. Ancient sources and later scholarship describe it as a long-lived religious and intellectual centre.

Religion and cult

The city was closely associated with solar theology and the worship of Re, later linked with Atum-Re. Its priesthood was influential, especially when sun worship became closely tied to royal ideology.

Archaeology and remains

Most of the ancient city has been lost to quarrying, reuse of building stone, and later urban development. Only limited remains survive, including the obelisk of Senusret I and scattered archaeological traces.

Modern location

The ancient site lay in the northeastern area of present-day Cairo, especially around Ain Shams and El-Matariya. Modern Heliopolis, a separate planned suburb, was later named after the ancient city.

Key facts

  • Heliopolis was among the oldest known cities in ancient Egypt.
  • It served as a major cult centre for the worship of the sun god Re.
  • The city was more important religiously than politically.
  • Its ancient Egyptian name was Iunu, while “Heliopolis” is the Greek form.
  • The obelisk of Senusret I is the best-known surviving monument from the ancient city.
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Canadian context

Heliopolis is relevant to Canadian readers through museum collections, Egyptology scholarship, and the global study of ancient religions and urban history.

Frequently asked questions

What was Heliopolis in ancient Egypt?
Heliopolis was a major ancient Egyptian city and religious centre, especially associated with the sun cult of Re.
What does the name Heliopolis mean?
It means “City of the Sun” in Greek.
What was Heliopolis called in ancient Egyptian?
It was known as Iunu, and in some traditions as On.
Where was Heliopolis located?
It was in northeastern Egypt, near the area of modern Cairo, around Ain Shams and El-Matariya.
What remains of ancient Heliopolis today?
Most of the city is lost, but the obelisk of Senusret I is a prominent surviving monument.

References

  1. Encyclopaedia Britannicahttps://www.britannica.com/place/Heliopolis-ancient-city-Egypt
    Supports: Heliopolis as an ancient Egyptian religious centre, its importance to the cult of Re, and the surviving obelisk of Senusret I.
  2. Wikipediahttps://en.wikipedia.org/wiki/Heliopolis_(ancient_Egypt)
    Supports: General overview of Heliopolis, its ancient name, Greek name, location, and the statement that the site is mostly ruined.
  3. The Global Egyptian Museumhttps://www.globalegyptianmuseum.org/glossary.aspx?id=177
    Supports: Heliopolis as the Greek name for Iunu, its meaning as City of the Sun, and its location beneath modern Cairo.
  4. Encyclopedia.comhttps://www.encyclopedia.com/history/asia-and-africa/ancient-history-middle-east/heliopolis
    Supports: Background on Heliopolis as a major ancient Egyptian religious centre and the significance of solar worship.