The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

World-famous, Pink's still manages to keep its prized cult fetish status.

A giant light 13 feet high shines near Thomas Edison's old Menlo Park lab.

A giant Troll lurks under one of Seattle's oldest bridges.

A dilapidated dock tells the story of Titanic’s missed arrival.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

An enormous overgrown greenhouse teeming with graffiti and wildlife.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

The mysterious canine hides atop a drain pipe on the back of the building, some say as a sneaky shoutout to Yale.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

It looks like a whale, it's part of Yale, and it's best-known by a nickname you can probably work out for yourself.

The headquarters of the famous Yale society.

Connecticut grave of the woman responsible for the Winchester Mystery House in California.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Neoclassical bank designed by NY architects Helmle & Huberty.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

A famous songsmith's custom piano, dubbed "High Society," is hidden just out of sight in one of New York's finest hotels.

A bit of retro transportation flair preserved in the world's largest department store.