The Roman Aqueducts 

The Roman Aqueducts brought water from the Apennines, the central mountain ridge, to Porta Magiore. The aqueducts, supported by arcades, worked by delivering river water to the city through gravity. More efficient aqueducts also ran underground. No pressurized pipes. The aqueducts supplied the Romans with unlimited water, and fed the public baths, mills, and fountains.

Aqueduct ruins