Aqueducts

At this site, two historic stone bridges spanning the Sing Sing Kill—one right on top of the other.

These 2000 year old remains of a Roman aqueduct are hidden inside a hotel lobby.

Built to supply water to farmers in Alberta, this was once was the world's longest elevated concrete structure.

A historical puzzle lies at the origins of this structure.

A railway, a waterway, and a roadway all in one, suspended over a rushing river.

This 900-foot structure with 20 arches crossing a Scottish river was built in the late 19th century.

An impressive bridge over a ravine also served as an aqueduct.

For centuries this cliffside aqueduct was believed to be of Roman origin, but it actually dates to the medieval era.

Built by a king and rebuilt by an emperor, this aqueduct transported water for 1,200 years to this ancient Mediterranean hub.

The longest canal aqueduct in England was built without a plan to get water past the moving boats.

A picturesque example of brute-force engineering conquering nature.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

A colossal aqueduct from the second century B.C., deeply hidden in a gorge on the outskirts of Rome.

According to the legend, this structure was built in a single night with the help of the devil.

It's not quite as old as its Roman appearance suggests, but this piece of infrastructure served Guatemala City for centuries.

What appears to be an ordinary bridge is actually a rare aqueduct.

A functioning Roman-era aqueduct and bridge in rural southwest France.

This ancient structure appears Roman, but was constructed during the 16th century and was utilized until 1911.