The Cloaca Maxima or, less often, Maxima Cloaca, is one of the world's earliest sewage systems. Its name is related to that of Cloacina, a Roman goddess.
Source: WikipediaThe Catacombs of San Sebastiano are a hypogeum cemetery in Rome, Italy, rising along Via Appia Antica, in the Ardeatino Quarter. It is one of the very few Christian burial places that has always been accessible.
Source: WikipediaThe Catacomb of Priscilla is a large archaeological site on the Via Salaria in Rome, Italy, situated in what was a quarry in Roman times. The catacombs extend underground for over seven miles, making them one of Rome's most extensive catacombs.
Source: WikipediaAn attraction in Rome.
The Fontana dei Libri is a fountain in Rome, Italy. It is located on the site of the Palazzo della Sapienza, where the Roman State Archives are. The fountain is known for its unique design.
Source: WikipediaThe Fontana dell'Acqua Acetosa is a fountain in Rome (Italy), located in the flat area with the same name, in the quarter Parioli; at this point the river Tiber forms a deep bend before heading north again.
Source: Wikipedia