Heliopolis was a religious centre of Egypt for a long time. It was right there where were main ideas of Ra's learning created. Platon and other philosophers stayed in Heliopolis in 5. century B.C. to learn Egyptian knowledge. This religious centre did probably still exist in Predynastic period. It was the capital city of homonymic Upper Egypt Nome and according to archaeologists was the city rebuilt in 47. year of Thuthmosis III. rule.
Only the obelisk 20,7 meters high was preserved till recent days. The 12. dynasty monarch Senusret I. let it set up and the obelisk stands on a concrete pedestal in the middle of little museum-like garden today. There is the same lettering inscribed on all four obelisk's walls in one single strip. It is king's titling on it and it mentions obelisk's set up for royal jubilee occasion.
House of the sun
Even if there's nothing preserved from Ra's cathedral to these days, the Egyptologist could rebuild it thanks to noteworthy document from Turin's museum. There is precise temple ground plan on an limestone board from Amenhotep II. rule time.
Heliopolis' temple let Senusret I. build and it had a traditional ground plan - three consecutive pylons followed by a sanctuary. The entrance of the temple sacred to Hathor-Nebethetep was from the first patio. A temple named "willow straightening chapel" was situated in second patio. Through the third pylon led the enter to an open-air sanctuary named "Atum's sycamore manor".
The city was on the decline under Ptolemaic dynasty rule, because the most precious subjects were carried away to the new centre - Alexandria.
Obelisks in Heliopolis