Less a museum than a bizarre fantasy world created by artists and engineers.

The rocks of a certain area of Butte, Montana give off a musical ring when hit.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

This strange hill on Old Fort Road where gravity works in reverse has been fascinating locals for years.

A tourist attraction founded around a slumping cabin.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A volcanic fissure over two miles long and up to 70 feet deep.

A home made entirely from scrapped, reclaimed and recycled material in Whitman County, Washington.

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

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

Home to the only outdoor municipal elevator in the United States.

Beyond being incredibly fun, not much can be said about the Hole with certitude.

In Washington's Yakima Valley lies a town "where dinosaurs roam."

An emporium for the weird, creepy, rare, and just plain gross.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This expansive bridge in the Canadian wilderness was originally just built for friends.

This Elizabethan hedge maze is one of only six in North America.

This bridge provides safe passage for squirrels.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

Stroll through a wonderland of stupendous moss-covered trees.

Rustic natural hot springs in the deciduous rain forest.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.