Nevada's largest cactus collection stands outside a candy mogul's small factory.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

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

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The dramatic upward-curving roof is one of the most iconic examples of Googie architecture that still stands today.

This glamorous old building is said to have inspired the Tower of Terror.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

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

Whiskey lovers, this is your happy place.

One of Hollywood’s favorite government buildings.

Two groundbreaking brothers from Pasadena.

Contemporary art inspired by natural history and science drawing on ancient techniques in a modern world.

A cobblestone alley with an interesting past.

The walls of the iconic dome are hollow and have a secret stairway.

The largest earthwork effigy in the world.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Unrepaired walls from a 1920 anarchist bomb attack.

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.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.