Park of the Caffarella
The Caffarella Park (Italian: Parco della Caffarella) is a large park in Rome, Italy, protected from development. It is part of the Parco Regionale Appia Antica (Appian Way Regional Park). The park is contained in the Caffarella Valley and is bordered on its northern side by the Via Latina and on its southern by the Appian Way. It extends lengthways from the Aurelian Wall up to the Via dell'Almone. It contains several items of archaeological interest, as well as a working farm, and has considerable ecological value, with 78 species of birds and fauna.
In Roman times much of the area was occupied by a large estate known as the Triopius. Herodes Atticus was a Greek who became a Roman senator. Through his marriage to Annia Regilla he acquired the land of the estate that stretched from the Caffarella Park to the Appian Way. Two ruins in the park date from that time, the tomb of Annia Regilla and the Nympheum of Egeria. Several towers in the park are medieval and served mainly as watch towers.
The name of the park comes from the Caffarelli family, which operated a farm in the area in the 16th Century. It was subsequently owned by the Pallavicini family and the Torlonias. In the mid-20th Century the area was in major danger of being used for urban expansion but was protected and then incorporated into the Appian Way park, following popular campaigns for its preservation. 
- The Nympheum of Egeria. This spring and surrounding construction can be dated back to the middle of the 2nd Century AD by reference to the types of bricks used in its construction. The water springs from the back under a now-headless reclining statue of the god, Almone. The Nympheum was constructed by Herodes Atticus after he was cleared of the murder of Annia Regilla.
- Tomb of Annia Regilla. This well-preserved building is also known as the Temple of the God Rediculum as scholars erroneously believed that its temple-like appearance meant that it had been build in honour of Rediculum, the God that Romans honoured at the beginning and end of each journey. Designed as a sepulchre it is not certain that it is the tomb of Annia Regilla. The construction is of red and yellow brick and there are two floors, with significant remaining external decoration.  In the Middle Ages it served as a hay loft for a neighbouring farmhouse.
- Valca Tower. This building is constructed from rectangular blocks of tuff and dates back to the 12th or 13th centuries. It was protected by a first wall of defence and a drawbridge. The tower is believed to have been part of a fulling mill. 
- Roman cistern. Constructed around 100 AD and originally underground, this cistern was exposed when earth moving was carried out for the construction of the nearby Circus of Maxentius.
- Columbarium of Constantine. This columbarium, a building for housing the ashes of the deceased, dates back to the 2nd Century AD. During the Middle Ages it was converted into a mill. 
- The Sacred Wood is a spot on a hill overlooking the valley and with good views of the mountains surrounded Rome and the Castelli Romani. According to tradition this is the spot at which Herodes Atticus ordered a sacred wood to be planted. 
- Church of Sant'Urbano alla Caffarella. A 7th Century church built over a 2nd Century pagan temple.
- The Caffarella Valley. Pamphlet produced by the Parco Regionale dell'Appia Antica
- The Water Trail. Pamphlet produced by the Parco Regionale dell'Appia Antica
- Guide ai servizi delle aree naturalii protette del Lazio: Parco Regionale Appia Antica. Regione Lazio, 2009
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