Baths of Agrippa - Agrippa between 25 and 19 BC he built the oldest public baths of Rome, who had an extension today between the sacred area of Largo Argentina, Via di Torre Argentina and route of St. Clare, just south of the Pantheon. These baths were fed by the Virgin began operation right in 19 BC and were flanked at stagnum Agrippae that probably could be used in some seasons as large pool by frequenters of the thermal building. We know that the baths were restored for the first time after the great fire that devastated the Campus Martius in 80 AD and again under Hadrian that included extensive redevelopment of the area due to the reconstruction of the Pantheon. Further work is then performed by Septimius Severus and later from Maxentius, while the latest news of consolidation of the structures are the years 344-345 AD under Constantius and Constans, the sons of Constantine. The Baths of Agrippa are remembered in the sixth and seventh centuries AD when in their vicinity were built at the foot of limestone for the destruction of ancient marbles.

The measures of the building (100x120 m.) Are known to be a fragment of the Severan marble plan and some drawings from the Renaissance period, as well as the plant characterized by various environments articulated irregularly around a circular room. This "Round" had a diameter of about 25 m. and parts of it have been preserved in the restoration of the Severan period, to this day in the way of the bow of the donut, this name given in the seventeenth century to the circular room that is still retained in full.

The Baths of Agrippa were left to the death of the son of Augustus to the Roman people who considered them immediately with particular interest, as evidenced by the episode on the bronze statue by Lysippos dell'Apoxyomenos that Agrippa had wanted to display in one of the halls of 'building. In fact, a few decades later Tiberius decided to have it removed to bring in his palace, but the emperor was forced to bring the work of art in its original location because at every appearance the people of the people did not stop to claim it loudly.