Thousands of turbines whir at at the origin of North American wind power.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

A commemoration of over 150 of St. Louis's favorite sons and daughters.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

The Grand Canyon of Texas.

At this gas station in the middle of the desert, a convenience store has been carved directly into the rock.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A natural formation that resembles a camel resting in the New Mexico desert.

Massive still life just off the highway in Kansas.

One of the smallest towns in the United States.

The site of the gruesome massacre—and maybe cannibalism—of five men, a tragedy that made Alferd Packer infamous.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

Take a dip in the world's largest mineral hot springs pool.

Even in death, he's still your huckleberry.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

This small piece of railroad history sits behind the parking lot of a chain grocery store.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

When ecosystems collide in the arid Southwest.