This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

One man's remarkable private collection of art from around the world.

A unique seaside cave where Aleister Crowley faked his own death.

The world's oldest bookshop still in operation.

This charming candle shop has been in business since 1789.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

Mountain known by the Tillamook Tribe as "the place of the supreme deity."

A Roman-style column in Oregon hides a spiral staircase inside.

At this airport "microcinema," you can catch a film before you catch a flight.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

A heavenly experience, right here on Terra Firma.

Tiny horses tethered to antique rings are scattered around the city.

The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

The only surviving sidewalk clock in Brooklyn.

Church featuring "high Victorian gothic" architecture.

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

Neoclassical bank designed by NY architects Helmle & Huberty.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

This lavish room in a New York City mansion is a rare relic from the end of the Gilded Age.

New York City's smallest piece of private property.

Phil Mortillaro uses keys to bring art back to the Village.

This slender three-story building has also had several famous residents.

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