Looks like the amphi-theatre at Olympia to me. Actually ran round the track.
Exploring the streets of Oia // by elsa's wholesome life #Oia #Santorini
Mykonos, Greece | Charming, colorful side streets are just one of the many quirks that make Mykonos a unique, vibrant paradise destination. Don't miss the pristine beaches that line the Aegean Sea.
Acropolis, Athens, Greece... Photo from @the_essentialist_!
Zakynthos, Greece. Wow never seen this before
Athens Acropolis, Greece More
Slovenian capital Ljubljana | The most beautiful European Destinations in Spring
See this Instagram photo by @sincerelyjules • 81.9k likes
St Stephen's Basilica - Budapest, Hungary | Photo: Imre Krénn
Budapest, Hungary ☛ @foto.viagem