A castle that was built stone by stone by an eccentric journalist.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

Resting place of Hollywood's immortals is also site of summer film screenings.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The legendary building that needed ghostly approval before being built.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

The celebrated eyesore created by starry-eyed sweethearts.

The drama of nature in full effect in this Nevada State Park.

This giant temperature attraction created some giant electric bills.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

Eighty million natural history specimens call this gargantuan museum home.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.