Ropes and sticks produce millions of bubbles (or even one giant one!) in the hands of an expert. This expert keeps the crowd entertained near the Fountain of Four Rivers in downtown Rome (Piazza Navona).
The area is a public plaza today, but people used to come here for a different spectacle. In the late first century this was the site of the Stadium of Domitian. People came to see the “games” or agones (the source of our word “agony”), hence its ancient name, the Circus Agonalis.