Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

A once-groundbreaking power plant turned into a hotel and mini-museum of archeological and geological wonders.

In Grand Rapids, Michigan, a marker honors the creation story of a proud fictional culture.

There are two legends behind the origin of this unusually tall sanitary structure.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

An architectural experiment in the Lower Ninth Ward, this row house is capable of floating as high as the Katrina floodwaters.

Happen to come across a dead eagle? Send it to America's official dead eagle warehouse.

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

The fifth-longest natural arch in the world, and the longest outside China.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

This 100-foot tall bluff located in the western plains of Kansas overlooks a massive reservoir.

These otherworldly limestone formations jut out from the Kansas prairie.

Why settle for barbecue chips when you can get actual barbecue?

A Kansas grassroots sculptor decorates the local roadways with his sculptures made from found objects.

This sacred space and gathering spot for the Wyandot Nation has been the surrounded by controversy and confusion.

This museum houses artifacts from American adventurers and filmmakers Martin and Osa Johnson.

Inside this mountain lies several kilometers of breathtaking caves.

One of Monterrey's oldest buildings is perched atop a hill boasting impressive views of the city.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

A historic and oft-filmed prison stands in a Chicago suburb.

In the Shawnee National Forest, amazing rock formations peer through the treeline.