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

A beautiful geyser under environmental threat.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

A chance to sleep among the firs and pines of the Oregon forest.

This natural marble cave is one of only five national monuments in Oregon.

Treehouse motel and treehouse-building school.

A tourist attraction founded around a slumping cabin.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

This set of three large, volcanic hot springs is a favorite haunt for intrepid divers.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

These century-old beehive-shaped kilns were built to produce charcoal for nearby mines.

A few dilapidated structures are all that remain of this deserted former silver mining town.

Tucked away on a scenic trail, a modest memorial honors one of the greatest writers of our time.

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

There are eight natural springs around town, each with a slightly different taste.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

Spend the night in this formerly abandoned traditional Scottish village.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

A proto micro-nation sometimes populated by artists, surrounded on all sides by a Utah most barren.

This granite monument at the site of an ill-conceived tourist attraction is built from the same stone as the Mormon Temple.

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