Underground Trevi and the Pantheon, Meeting at Tazza d'Oro

Two monuments and the thing underneath one of them, in a group small enough to ask questions of the guide as you walk. The meeting point is outside La Casa del Caffè Tazza d'Oro on Via degli Orfani 84, a famous bar a short walk from the Pantheon. Entry to the Pantheon is fast-track, and the visit inside runs about forty minutes. What most people do not know about the Trevi Fountain is that there is a Roman quarter beneath the district it stands in, several metres below the modern pavement, with the water of the same ancient aqueduct that feeds the fountain still running through it. Standing in the square, you are on top of a city that was buried rather than demolished. Above ground, the Pantheon was a Roman temple and has been a Catholic church since the seventh century, under the name Santa Maria ad Martyres. Agrippa built the first temple on the site during the reign of Augustus. It burned, and Hadrian ordered the building that stands now, dedicated around AD 126. The construction date is uncertain for one reason: Hadrian kept Agrippa's inscription on the front instead of putting up his own. Guides are licensed. Note that the sale is final and no refunds are given.