Delphi is located in upper central Greece, on multiple plateaus along the slope of Mount Parnassus, and includes the Sanctuary of Apollo, the site of the ancient Oracle. This semicircular spur is known as Phaedriades, and overlooks the Pleistos Valley.  

Delphi is famous as the ancient sanctuary that grew rich as the seat of Pythia, known as the oracle of Delphi, who was consulted about important decisions throughout the ancient classical world. Moreover, the Greeks considered Delphi the navel (or center) of the world, as represented by the stone monument known as the Omphalos of Delphi.  It occupies an impressive site on the south-western slope of Mount Parnassus, overlooking the coastal plain to the south and the valley of Phocis. 

It is now an extensive archaeological site with a small modern town of the same name nearby. It is recognized by UNESCO as a World Heritage Site in having had a phenomenal influence in the ancient world, as evidenced by the rich monuments built there by most of the important ancient Greek city-states, demonstrating their fundamental Hellenic unity.