South Dakota's oldest operating brewery is housed inside a historic firehouse.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

Every president in history is immortalized in bronze in downtown Rapid City.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The home for all things Kool-Aid offers everything except a chance to actually enjoy the drink.

This replica small town lets visitors take a stroll through the story of progress in the U.S. via thousands of Americana artifacts.

This Great Plains museum pays tribute to both the prosperity and tragedy of the North American fur trade.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

The oldest extant wooden jail in South Dakota and possibly the United States. 

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

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

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

An experimental, automotive replica of Stonehenge.

This erect, phallic geological spire wasn't always named so domestically.

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

This museum offers an actual time machine back through Colorado's past.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

This sidewalk tribute honors Colorado's great culinary creation.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.