Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

One of the smallest towns in the United States.

Even in death, he's still your huckleberry.

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

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

A downtown park built on top of unclaimed graves.

Stairs often replace streets on the steep slopes of this old mining town.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

The world's largest military aircraft cemetery.

The Magical World of George Phar Legler.

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

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

An urban laboratory.

America's largest man-made forest was planted in an effort to bring back the past.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

A Mayan village preserved for centuries in volcanic ash.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

Otherworldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.

This 1967 experiment in modular architecture was designed to be a new model for urban living.