This historic palace, a few metres from Piazza Venezia, the Forum and the Baths of Trajan, has been the seat of Rome's provincial administration.
A Major excavation project revealed a group of senatorial villas buried beneath it.
It's one of the finest archeological sites to come to light in recent years; an astonishing sight, with a beautiful mosaic floor, the remains of walls and frescoes.
The multimedia museum inside the building has recreated the past with virtual reconstruction, videos and graphics. Visitors can see rooms, peristyles, baths, kitchens, walls, furnishings and decoration brought back to life, taking a virtual tour of a great Domus of ancient Rome.