A derelict bit of transportation infrastructure hidden in the woods.

A painfully obvious spy house sits right across the street from the Russian Embassy.

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

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

World's first "penitentiary," meant to be humane, drove men insane.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

This restaurant offers a side of antiques, curios, and a bathroom chock full of owls.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

A 17th-century bezoar, dirt from an infamous site, and other curios decorate this unusual bar.

This small, hidden cove is home to abandoned boats.

The remains of a 19th century spring, and the site of an infamous unsolved murder.

If you dial the number in this abandoned office window "Sam Spade’s" secretary will ask you to leave a message.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This ominously named New Jersey street seems to be attracting over-the-top legends of its own making.