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Photo: Livioandronico2013, CC BY-SA 4.0 via Wikimedia Commons
The mausoleum of Cecilia Metella, who died in 69 BC, is the best preserved monument on the Appian Way and dominates the surroundings. In the Middle Ages it was transformed into a fortress and battlements were added. At that time there was considerable competition for ownership because of its strategic location.
The Tomb of Caecilia Metella is a mausoleum located just outside Rome at the three mile marker of the Via Appia. It was built during the 1st century BC to honor Caecilia Metella, who was the daughter of Quintus Caecilius Metellus Creticus, a consul in 69 BC, and the wife of Marcus Licinius Crassus who served under Julius Caesar and was the son of the famous triumvir with the same name, Marcus Licinius Crassus. The mausoleum was probably built in 30–10 BC by her son who also had the same name, Marcus Licinius Crassus.
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This well-preserved Roman circus was built at the beginning of the fourth century. It was part of an imperial villa built by Maxentius and the complex also contains the Mausoleum of his son, Romolo.
This archaeological site displays the thermal baths of the villa of the wealthy Herod Atticus. Also in the complex is a restored villa, until 2002 a private residence, that has an exterior completely covered with pieces from Roman ruins, including pipes used in the baths. There are some very helpful staff to show you around, although they only speak Italian. An interesting photographic exhibition in the house traces the development of the Appian Way over the last century. Almost opposite the entrance to the baths is a ruined tower known as the Torre di Capo di Bove.
These are underneath a property known as Vigna Randanini. The catacombs are much smaller than the Christian catacombs and much less easy to visit. Groups are limited to twelve people at any one time and you need to take your own lighting!
The first basilica was constructed in the 4th century and dedicated to San Sebastian, a martyr of the 3rd century. Sebastian's remains were transferred to St. Peter's in 826, prior to a Saracen assault when the church was destroyed. The current church was largely constructed in the 17th-century. Until the Great Jubilee in 2000 this was one of the Seven Pilgrim Churches of Rome, i.e. the churches that all Roman Catholic pilgrims were expected to visit. However, at that time it was replaced by the Sanctuary of Divino Amore (see below). Entrance to the catacombs, which are smaller than the others in the area, is to the right of the church entrance. The area where you buy tickets and wait for tours has a good display of sarcophagi from the catacombs. You can rent a bicycle at the catacombs for further exploration of the Appian Way.
This was the site of the slaughter in 1944 of 335 Italians, including many Jews from the Ghetto, in retaliation for a Partisan attack on German troops in Rome. The caves where the massacre took place are now a National Monument and Memorial Cemetery and can be visited daily.
Although started in the 2nd century, San Callisto has had many more recent burials, including 16 popes. The burial arcades are almost 20 km long.