This Alaska library may be the only one in the country that allows you to check out pieces of taxidermy.

The now-serene site of the largest earthquake ever recorded in North America.

Considered by many to be one of the most dangerous highways in Alaska.

Pay homage to a preeminent matriarch, and the native Dena’ina people, at this sculpture installation in Anchorage.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

An abandoned concrete jungle surrounded by a lush park.

During the 1990's nearly all of the world's LSD is thought to have come from the operators of the lab once located in this missile silo.

The ruins of a 19th century shelter run by the Independent Order of Odd Fellows.

The only diamond mine in the world where you can keep what you find.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Every winter, the wind carves blocks of frozen water into beautiful abstract shapes inside this unusually curved tunnel.

This century-old roadside attraction is full of bizarre rock formations.

A natural rock formation believed to be a cure-all.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

Curious cave that stays a cool 56 degrees all year long.

Curious rock formations in a tiny Kansas state park.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.