 The inverted siphon at Aspendos employed two dramatic water towers. |  When hills could not be skirted, tunnels were constructed. Note that… |  The Romans used a human-powered machine similar to this modern… |
 Water was lifted from a well (or lower level) in buckets. (Courtesy… |  A treadmill was used to power the water-lifting machine in ancient… |  Once at or near a community, the Romans used a variety of structures… |
 These water storage tanks were located at the terminus of the… |  This circular tank (castellum) is located at the terminus of the… |  This two-story monumental fountain, located in the ancient Roman city… |