See Rome from a different perspective on an unusual underground tour of the “Eternal City,” starting at Piazza Navona, built over the site of the Stadium of Domitian. Hear about the piazza's original use, before descending to the most important stadium of the Roman Republic. Commissioned by Emperor Titus Flavius Domitianus in around 80 AD, the stadium was primarily used for athletic contests. Back on street level, stroll over to the Pantheon, temple to all the gods of Rome. Discover the original street level of Ancient Rome at the ruins of Hadrian's Temple. Look below ground to see evidence of streets from centuries gone by. Next, go to the Trevi Fountain and throw a coin in the fountain, according to tradition. Cross Piazza di Trevi to enter the Vicus Caprarius, which emerged during the renovation of the Trevi Cinema. See a Roman insula, consisting of a "block" divided into independent units, surrounded by the walls of today’s Via di S.Vincenzo and Via del Lavatore. Learn how, in ancient times, the area was a swamp, before playing a part in the construction of the Virgo aqueduct in the time of Agrippa. The aqueduct still supplies the fountains of Rome’s historic center, including the Trevi Fountain.