Abandoned

A Bicycle Path in the Sky.

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

This abandoned radar station from the Cold War era now only broadcasts a seriously ominous air of isolation.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

Abandoned castle was once a grand example of Russian privilege, built exclusively to win a frivolous bet between noblemen.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A man-made island designed to look like a massive battleship.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

A nuclear power plant abandoned along with an international allegience.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

Tombstones buried in overgrown grass mark the deceased occupants of this abandoned graveyard.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

A newspaper editor turned this abandoned island into a tortoise nature preserve that's now the world's smallest national park.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

Infamous and now demolished panopticon prison built by its former inhabitants.

An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

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

Abandoned Coast Artillery fort now serves as a graffiti canvas and sightseeing vantage point.