The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A museum dedicated to the alleged Roswell Incident.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

A giant open-air sculpture made of over 200 full-sized boats.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Flashy signs from Las Vegas’s past find their final resting place at this unusual graveyard.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

This one-room museum is dedicated to Norwegian history and jokes.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

The world's northernmost aquarium looks like it has fallen over.

This Arctic storage facility is a secure backup for agricultural biodiversity.

The site of a strange super top-secret military experiment during WWII on a remote Canadian lake.

Fossils, railroads, and waterfalls!

The only road through the heart of Glacier National Park.

The mountaintop wind turbine boasts a viewing deck — and a fair share of controversy.

This expansive bridge in the Canadian wilderness was originally just built for friends.

At just six feet two inches deep, it is said by Guiness and Ripley to be the world’s narrowest freestanding office building.

Surprisingly delicious Asian-style hot dogs.

A pixel art killer whale is frozen mid-leap in this Vancouver square.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.