The Colosseum is the largest ancient amphitheater ever built.

The Domus Aurea was a vast landscaped palace built by the Emperor Nero in the heart of ancient Rome after the great fire in AD 64 had destroyed a large part of the city and the aristocratic villas on the Palatine Hill.

The Santa Prisca Mithraeum, an underground sanctuary dedicated to the god Mithras.

The Baths of Caracalla are a grand historical complex that once served as a public bathhouse.

Crypta Balbi, a window into the urban development of Rome.

The Pantheon is a former Roman temple, now a Catholic church, in Rome, Italy.

The Temple of Minerva Medica is an ancient Roman structure in Rome.

The Pyramid of Cestius is an ancient pyramid in Rome, Italy, near the Porta San Paolo and the Protestant Cemetery.