The Aqua Claudia is the ancient Roman aqueduct built by the Roman emperor Claudius in 52 CE (begun, however, by Caligula in the 30s). I borrowed a mountain bike from my AirBnB host and went there this morning to catch the early sun. The Parco degli Acquedotti is a vast green space which today, Saturday, was enjoyed by many joggers, cyclists, and hikers. Alas, a large section is reserved for just a few golfers, along the most scenic stretch of the arches.