This Boston medical museum features the skull of the famous medical case of Phineas Gage.

An enormous, inside-out glass globe built in 1935.

Intricate storybook scenes are tucked inside these shadow boxes, which are tucked inside a library in the Pocono Mountains.

Failed state-supported institution meant to rehabilitate students with intellectual disabilities.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

Two New York rooftops are home to the largest rooftop soil farms in the world.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

Bowl in splendor, if you're lucky.

On the top floor of an upscale department store stands a lavish restaurant housed in a replica of a luxury French dining car.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

For decades these polar bears have roamed all around a Nashville neighborhood.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

This award-winning men's bathroom was just too beautiful to not allow women to see.

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

One of the last full-orchestra recording studios in New York City and an acoustical marvel.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

An annual extravaganza of Broadway theater memorabilia.

Hundreds of antique bank vault locks on display in New York City.

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

It may take some time to locate, but it's sure to warm even a heart of stone.

Tour the sci-fi-esque reality of governmental disease management.

Scattered around Atlanta are little doors with big charm.

A gateway to a mysterious network of underground tunnels.