Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

This World War II-era bunker is now packed with posters and props from movies and TV shows filmed nearby.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

This coastal cavern is associated with the Hawaiian god of creation.

This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.

Art Deco stylings conceal the true nature of this bridge.

I Street Bridge is the heaviest swinging center bridge in the United States.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

A spectacular but little-known slot canyon in extreme northern Nevada, with sheer walls nearly 500 feet high and a perennial stream.

A little-known occurrence of fossil wood in northern Washoe County, Nevada, near the Black Rock Desert.

Many generations of travelers have passed through the steep, smooth walls of this canyon.

The magic's in the hole!

The last of a gourmet supermarket chain, this store helped spark California's Food Revolution.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

This Old West eatery along America's Loneliest Road was originally a stop on the Pony Express.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

This massive crater in the middle of nowhere was used to train astronauts for moon landings.

A monument celebrating the idea of reaching inaccessible places.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

Georgia's first brewery is also one of its oldest surviving buildings.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

Ruins of a Carnegie family mansion on Cumberland Island.

Bad farming practices caused this unnatural natural wonder.

The picturesque southern city served as the zombie-filled town of Woodbury in 'The Walking Dead.'