Piazza Navona is a public open space in Rome, Italy. It is built on the site of the Stadium of Domitian, built in the 1st century AD, and follows the form of the open space of the stadium. The ancient Romans went there to watch the agones, and hence it was known as “Circus Agonalis”.
The Pantheon is a former Roman temple and since the year 609 a Catholic church, in Rome, Italy, on the site of an earlier temple commissioned by Marcus Agrippa during the reign of Augustus. It was rebuilt by the emperor Hadrian and probably dedicated c. 126 AD.