England, London, The Shard seen from the Scoop. which is a sunken entertainment amphitheatre next to City Hall.

England, London, Tower Bridge with people enjoying Summer sunshine at the Scoop. which is a sunken entertainment amphitheatre next to City Hall.

Italy, Lazio, Rome, View of the Roman Forum from Capitoline Hill in evening light with the Colosseum in the background.

Italy, Lazio, Rome, View of the Roman Forum from Capitoline Hill in evening light with the Colosseum in the background.

Italy, Lazio, Rome, The Colosseum amphitheatre built by Emperor Vespasian in AD 80, View of a section of the south side.

Italy, Lazio, Rome, The Colosseum amphitheatre built by Emperor Vespasian in AD 80, View of the full south side with tourists both inside and outside.

France, Vaucluse, Orange, Theatre Antique d'Orange, built in the early first century AD, Still in regular use as a theatre, Picture shows dance troupe rehearsing.

France, Vaucluse, Orange, Theatre Antique d'Orange, built in the early first century AD, Still in regular use as a theatre, Picture shows dance troupe rehearsing.

Italy, Rome, The Colosseum amphitheatre built by Emperor Vespasian in AD 80 with the interior thronged with tourists.

Italy, Rome, The Colosseum amphitheatre built by Emperor Vespasian in AD 80 with the interior thronged with tourists.

France, Nice, Arenes De Cimiez, also known as Arenes Romaines, Roman ruins, Parc Des Arenes De Cimiez.

Turkey, Aspendos, Roman Amphitheatre, Arena Seats.