Open-air and underground ruins of a 1st century Roman circus (chariot-racing track) and Tower, UNESCO World Heritage Site, Tarragona, Catalonia, Spain, Europe

The Circus Maximus (Circo Massimo), an ancient Roman chariot racing stadium and mass entertainment venue in Rome, Lazio, Italy, Europe

Carceres towers, the circus, Imperial residence of Massenzio, Appian Way, UNESCO World Heritage Site, Rome, Lazio, Italy, Europe

Carceres towers, the circus, Imperial residence of Massenzio, Appian Way, UNESCO World Heritage Site, Rome, Lazio, Italy, Europe

Roman Circus, Tarraco (Tarragona), UNESCO World Heritage Site, Catalonia, Spain, Europe

The Circus, Bath, Avon (Somerset), England, United Kingdom, Europe

Architectural detail the Circus, Bath, UNESCO World Heritage Site, Avon, England, U.K., Europe

The Circus, Georgian terrace, Bath, UNESCO World Heritage Site, Avon, England, United Kingdom, Europe