The first of these temples was constructed in the first century BCE and over the next 200 years, the Romans built three more, each dedicated to the gods Jupiter, Bacchus, and Venus.

It was a popular holding for important documents and at one time housed over 12,000 different scrolls.

This astoundingly large theater had a seating capacity of around 24,000, effectively making it one of the biggest amphitheaters in Gaul.

Located in present-day southern France, this is one of the few surviving aqueducts constructed during the Roman Empire.

It was built by Roman General Marcus Vipanius Agrippa in memory of his two sons who died young. It is the only temple constructed in the time of ancient Rome that is completely preserved to this day.

This wonder was a temple for all the Roman gods. It has a large circular portico that opens up to a rotunda. The rotunda is covered by a majestic dome that adds a whole new dimension to its grandeur.

When this famous amphitheater was built in ancient Rome, it had a capacity of 50,000, making it the largest amphitheater of its time. It could accommodate such large numbers of spectators that as many 80 different entrances were installed

One of the best-preserved pieces of architecture from ancient Rome, it was built around 50 CE to facilitate the flow of drinking water from the River Frio to the city of Segovia.

Located today in Croatia, this marvelous building was built in preparation for the retirement of a Roman emperor--who retired because of health issues.