Each of these 87 large stones has a unique message. Together, they form part of the Minnesota Military Family Tribute.

Enter the Forest of the Elves.

This lab's maddening silence is good for business but bad for sanity.

The secluded site of a 1943 plane crash and amazing rescue is only accessible by hiking through the woods.

See just what life was like in a 19th-century prospecting town.

Home to the deepest rift anywhere on Earth.

This impressively large collection includes crackers shaped like Jimmy Carter, Mickey Mouse, and more.

Train debris from the deadliest avalanche in United States history can still be found in the ravine where so many perished.

A sacred lake composed of over 300 separate pools of highly concentrated minerals.

A small Wyoming town is home to the state's oldest-operating soda fountain.

The same security that protects our nukes accidentally protected a gentle herd of antelope.

Dance on a hand-hewn log floor padded with bouncy boxcar springs at a saloon built in 1883.

A miraculous natural phenomenon known as "the spring that breathes."

An architect's childhood fantasy treehouse made real.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

Native Americans built this circle of stones, which was used to predict astronomical events.

A beautiful geyser under environmental threat.

The old fire tower is one of the last of its kind in the United States.

A working ranch doubles as a sustainable hub for world-renowned classical music and large-scale sculptures.

A small Montana town commemorates the dog who waited at the train station every day for his owner to return.

A classic mystery spot complete with spots that are said to make you shrink or grow when you stand on them.

For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.