Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

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

Spectacular views await visitors to this lake.

A whimsical, punny collection of "fence art" outside the tiny mountain town of Baker, Nevada.

Dozens of rockets and missiles are on display outside a testing facility in the Utah desert.

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Although it also features red, orange, and variegated cliffs of Navajo Sandstone, this state park is often overshadowed by its more famous neighbor.

Irontown was founded in 1868, as a second attempt to mine iron from the nearby Iron Mountain.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

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

An artsy hidden staircase leads to breathtaking views of San Francisco.

With a crest near 10,000 feet, this treeless fault-block mountain in eastern Oregon provides stunning views and spectacular glacial landforms.

The unique circular corral belonging to the “Cattle King” of Oregon.

At the base of Steens Mountain resides an otherworldly desert.

A volcanic landmark located on an Ice age lake bed.

Home to a timed geyser created by complete accident.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

This museum glorifies the humble potato.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

This 19th-century museum inside of a lighthouse is only accessible during low tide.