Engineering

This industrial gem was one of the earliest examples of a metal-framed building.

This former hydraulic laboratory is now a woodland dotted with old engineering models.

An autonomous community living in the southern Negev desert.

This former railroad bridge was named after the great river that once flowed below it.

This ancient tunnel is one of the most important examples of Roman hydraulic engineering in Spain.

This multi-level, aqueduct-footbridge hybrid is one of the greatest works of the Spanish Renaissance.

A 2,000-year-old engineering wonder hides beneath an Italian town.

This old train trestle and collapsed tunnel once allowed the railroad to negotiate the steep slopes of the Colorado Rockies.

This magnificent brick dome was made with an unusual design method.

Despite its ornamental looks, this towering Tuscan-inspired anomaly was a masterpiece in hydraulic engineering.

This cliff-face port is considered a masterpiece of mining engineering.

The "Bridge Over the Atlantic" lets you cross the waterway in mere seconds.

This 15th-century aqueduct with distinctive pointed arches was used for irrigation in the Vinalopó valley.

This colorful overpass is one of Bhutan's longest suspension bridges.

This 17th-century structure is a beautiful testimony to traditional Persian architecture

The highest bridge in the world rises a dizzying 1,854 feet above the river.

A marvel of engineering built to prevent annual floods from devastating the city of Winnipeg.