theatre of delphi overlooking valley

mount parnassus temple apollo omphalos ancient greece antiquity monument marble orchestra hill theatre doric summer background landscape delphi amphitheatre athenian treasury ruin architecture mythology column pythian games valley worship heritage view delfi building sacred pagan prophecy landmark tourism pythia unesco religion sibyl culture historic pytho oracle civilisation hellenic travel greek god sanctuary archaeology classical parnassos national park mountain overlooking delphi precinct served seat major world