Built in 10 AD by the Consuls Dolabella and Silanus, this simple arch of Travertine supports a complex arrangement of brick aqueducts. It is unimpressive in itself, but when one takes in the surrounding aqueduct fragments, the site is quite fascinating.

Access: Freely open at all times on Via Claudia.

Ruins exist on the south side of the Clivo di Scauro of an unknown structure. It is widely held to be a Roman townhouse belonging to the family of the Anicii. There are actually several possibilities for this structure, but the church of Saint Gregory the Great is not far to the south and Saint Gregory is known to have been a member of the Anicii. Thus it is a reasonable (though far from certain) suggestion that these ruins are those of his family's house. Certainly this area of the Celian hill became known in the Principate as an area of fine housing and villas for Rome's wealthier families. Perhaps one day further excavation will reveal the definite history of the building.

Access: Visible from the Clivo di Scauro (exterior only).

Constructed in 203 AD by the Emperor Septimius Severus, this huge monumental structure stood at the southeast corner of the Palatine and would face anyone entering the city along the Via Appia. Its function was as a grand Nymphaeum, being three stories high, with three bays that contained fountains and statues, all colonnaded. It would certainly have been an impressive and imposing sight. The name Septizodium (also Septizonium) comes down from antiquity and its meaning is unclear, though it may refer to freizes or statues of the planetary Gods that could have decorated the structure. The structure survived until 1588 when it was pulled down on Papal orders and the materials used elsewhere. Only recently has the base been marked out. There is nothing now to be seen of the structure, but merely its outline in a garden.

Access: Visible from the junction of Via dei Cerchi and Via di San Gregorio.

This massive temple complex to the deified Claudius was begun by Agrippina, almost completely destroyed by Nero, and completely rebuilt by Vespasian. The methods of construction vary on the different sides and may show the diverse techniques of the different eras of construction here. Virtually nothing is left of the temple (and its destruction is not documented). The most extensive remains are of the massive platform the temple rested on, which can be seen on three sides (west, north and east.) On the southern side, reached by the Arch of Dolabella or the Clivus di Scauro, is a belfry of the church which contains some of the temple's stonework.

Access: External viewing from Viale del Parco del Celio, Clivo di Scauro and Via Claudia. Freely open at all times.