This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

A smoke stack so large, the Washington Monument could fit inside!

This tiny movie theater was the last one in the U.S. constructed in the Nuevo Deco architectural style.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

One street divides a single town that stands in two U.S. states.

This tower was once used to create ammunition for early settlers.

This monument is dedicated to those lost on June 6, 1944, in the town with that day’s highest per-capita casualty rate.

Outsider art meets paleontology at this roadside reptile repository.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

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.