This incredible collection of vintage pinball machines can be played at 25 cents a pop.

A surreal, interdimensional shopping center and portal to another universe by Meow Wolf.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

A small section of native wilderness on a university campus

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

See massive fossils that are over 200 million years old in northeastern Arizona.

An underwater road considered a possible Atlantis location.

A glimpse at Walt Disney's vision for a "community of tomorrow," in miniature.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

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

This enormous World War II relic is one of the largest wooden structures in the world.

The final resting place of a space program monolith, soon to be unveiled again to the public.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

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

The only diamond mine in the world where you can keep what you find.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

In Paris, Texas they have their own Eiffel Tower, it just has a cowboy hat on it.

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.