Learn about the history and craftsmanship of carousels inside this museum located in a former post office.

This steamer is known as "The ship that built Cleveland."

A crumbling hospital from the 1850s on Roosevelt Island.

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

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

Cold War missile launch site which has been converted to a public park.

The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

A recently abandoned psych ward at the end of Sanatorium Road.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

An abandoned town is hidden in Great Smoky Mountains National Park.

Hidden deep within New Jersey Pine Barrens is a massive graffiti wonderland.

This once sprawling resort now sits abandoned, filled with graffiti and vibrant colors from an era long passed.

The 19th-century ruins hide deep in an overgrown forest.

Where beautiful signs live on forever.

The remains of one of the last mining camps developed on the New River.

A well-preserved relic of the industrial age steel and iron works that dotted West Virginia.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.