This once luxurious Catskills resort is now a haunting ruin.

A forsaken wonder in the middle of the East Side neighborhood.

Ruins of a historic medical facility sits eerily by the water.

Built to be the ideal penitentiary, this abandoned panopticon saw several revolts and even a prisoners' coup.

Two planes stand abandoned after the closure of an aircraft-themed restaurant.

Buffalo's abandoned concrete grain elevators are getting a second life.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

An overgrown and abandoned tuberculosis ward resides in the midst of a quaint modern neighborhood.

Not far from a popular beach, an unfinished, abandoned mansion for Bulgaria's last communist dictator.

Once the largest public hospital for the mentally ill was also surrounded by controversy.

Accessible only by boat, this centuries-old island fort never saw troops or combat.

This enormous abandoned factory is now a makeshift graffiti gallery.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

An abandoned Victorian-era mill in the middle of modern Manchester.

The only residents of this abandoned housing development full of identical castles are stray cats and dogs.

The remnants of a luxurious resort that saw its peak in the 1970s and 1980s has been abandoned since 2009, leaving behind the wreckage of both the hotel and a beautiful ice skating rink.

The only surviving building of historic West Boylston, which was flooded to create the Wachusett Reservoir.

A former mining village that now operates as an open-air museum.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

Designed by famed 20th-century architect Cass Gilbert, the future of this abandoned 1908 rail station is currently in limbo.

Home to the abandoned Tioronda Hat Works Factory, this park is a combination of woodlands and marshlands.

The evocative ruins of a medieval village.

This impressive chasm is one of the longest natural underground cavities in the world.

Explore an eerie, abandoned medieval citadel.