They keep some remains of the walls of tombs from the end of the Republican era to the mid-second century. A.D. with particular reference to the construction type called "columbarium" on the use of incineration. <br> In particular, there are the remains of a boundary wall of a monument in the square piece of tuff and tuff with representation of a false door, the so-called Great Columbarium (from which the paintings in the Museo Nazionale Romano) and the Little Columbarium, both found in the years 1820-1830 by excavations carried out by the Doria Pamphili family. A few meters away from these was discovered in 1984 another columbarium with abundant pictorial remains of good quality related to the Augustan age. <br> Area, as it guards the sixteenth century building dell'Algardi, is currently in use at the Presidency of the Council of Ministers as a representative office.