A thorough archaeological study traces the routes, construction, and remains of ancient Roman aqueducts, describing their channels (specus), arcades, reservoirs, and connections to baths and palaces. It maps principal lines from sources to city termini, examines above-ground arches and subterranean stretches, and explains distribution features such as castellum aquae and cisterns. The work details engineering feats at mountain sources and notable cascades, the reuse and alteration of conduits in later periods, and the challenges of identifying fragments in the urban landscape, illustrated by photographs and field observations that record surviving structures and their relation to city topography.