Abandoned

Built to ward off Napoleon's army, this city-sized abandoned Russian fort is now perfect for urban exploration.

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

This railroad tunnel was once the longest in Massachusetts.

No one really knows how these old hobby horses got here, but the herd keeps growing.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

This airfield is home to a number of retired vintage planes in various states of disrepair.

These pools have been abandoned for over 20 years.

The only runway directly into the magic kingdom has been closed since 1972, but it still sings to you if you drive fast enough.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

The U.S. military dumped millions dollars worth of goods off a beach in Vanuatu, purely to spite the British and French.

A former connection to City Island, it has been abandoned since the 1930s.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

The remains of an abandoned air force hospital located on a redeveloped Air Force base.

During World War II, this rice mill became a Nazi concentration camp.

This overgrown Illinois water park offers a whole new type of adventure.