The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A trio of colossal statues spread across a Dallas neighborhood chart the emergence of a giant robot born of a locomotive and spilled gin.

Massive still life just off the highway in Kansas.

When ecosystems collide in the arid Southwest.

See six states, pickled freaks, rocks, and antiques.

One of the smallest towns in the United States.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

There are eight natural springs around town, each with a slightly different taste.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

An annual festival celebrating Colorado's most famous frozen corpse.

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

Home to the deepest rift anywhere on Earth.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.