Aqueduct Park, one of my favorite places in Rome.This park is part of the Appia Antica Park and contains aqueducts dating back as far as 52AD.
These massive structures transported water to the city center bringing about new standards of sanitation by providing sewage systems, public bathrooms and running water to the residents of Rome.
It is something to see... really reflects the ingenuity of the Romans.
This park is located about 5 miles from the Colosseum and can be reached by metro. Keep in mind it is located in a working-class neighborhood. The surrounding area will not resemble the city center from an aesthetic perspective, but, it will give you a glimpse into the daily life of the locals.
How to get there: Take the Metro line A in the direction of Anagnina, get off at the Giulio Agricola stop...it is a 10 minute walk from there.