Delphi, where the oracle of Apollo spoke

Delphi was considered by the ancient Greeks to be the centre of the world. According to ancient myth, Zeus released two eagles, one from the east, the other from the west, and caused them to fly toward the centre. They met at the future site of Delphi, and the spot was marked by a stone called the omphalos (navel), which was later housed in the Temple of Apollo. According to legend, the oracle at Delphi originally belonged to Gaea, the Earth goddess, and was guarded by her child Python, the serpent. Apollo is said to have slain Python and founded his own oracle there.