Who needs fancy modern water slides when this giant North Carolina rock works just as well?

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A memorial to the unknown and unheralded men and women of the Cold War military and intelligence services.

This restaurant features Native American foods from across the country.

Considered "the most original, complete, and unimproved" circles in Aberdeenshire.

A tribute to the Celtic nations that helped settle Australia.

Despite its extensive history, this fort saw little to no combat.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

The Grand Canyon’s original airport, which once welcomed pilots like Amelia Earhart and Charles Lindbergh, lies abandoned.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

A Romanesque sanctuary of calm amid the bustle of downtown Los Angeles.

One of Los Angeles's first murals once vibrantly depicted the dangers of United States imperialism.

The sole surviving large cairn in an area that was once littered with burial monuments.

The three biggest silent film stars once shot iconic scenes here.

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

At the point of oceanic inaccessibility, you can't get farther from dry land without leaving the planet.

Life-sized statues of two characters from a decades-long Japanese film series stand outside Shibamata station.

This bank is widely believed to be the inspiration for the offices of Philip Marlowe, the hardboiled detective featured in a number of Raymond Chandler's stories.

On Waikīkī Beach, a monument to four extraordinary individuals of dual male and female spirits who brought the healing arts from Tahiti to Hawai'i.

Inaccessible by foot, Japan's most secluded train station sits in the middle of nowhere.

World War II bunker still standing on the New Jersey beach.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

The last remaining building in Washington, D.C., built by H.H. Richardson, one of America's most iconic architects.