Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

Captured in 1968, the Cold War spy ship is the only U.S. Navy vessel being held by a foreign government.

Vancouver's only resting place for the city's deceased.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

An abandoned tuberculosis hospital moulders on into an uncertain future.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.

A formerly abandoned mental institute, now back in business.

The abandoned ruins of America's first private zoo are open for exploration in the Catskills.

An abandoned asylum once on the cutting edge of lobotomies may be reborn as a Christian college.

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.

Home on the Hillside, and home of the first breakfast cereal.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

The site of a tragic massacre that spawned a multimedia franchise.

An abandoned asylum where patients have been forgotten but their possessions remain.

The loneliest island in New York.

A once grand hotel is being retaken by the wilderness it once capitalized on.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A crumbling hospital from the 1850s on Roosevelt Island.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.