Infrastructure

A popular European tradition makes its way to the states on one of America's most famous bridges.

A marvel of Byzantine engineering under the streets of Istanbul.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

An abandoned relic of the city's failed experiment with below ground transit.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".

This derelict superstructure was a very important warning system for the Soviet military.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Known as the most dangerous bridge in the world, the Hussaini Hanging Bridge is only one of many precarious rope bridges in Northern Pakistan.

The 606 is a decade in the making.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.