The last of Rome’s aqueducts was the Aqua Alexandrina ... the vertiginous spiral staircase that makes it possible to climb inside); and Pius V in the 16th century. Concrete structures have ...

We asked Aicher, author of "Guide to the Aqueducts of Ancient Rome," about the Romans' sophisticated water distribution system, including its elegant aqueducts. Here's what he told us: NOVA ...

Aqueducts are one of the wonders of the Roman Empire. These graceful structures are not only majestic, but are engineering marvels that survive to this day. In "Construct an Aqueduct," you are ...