More than 21,000 images fill this overlooked gem of a prehistoric site.

In a largely deserted ghost town, a little brick building recalls its history as a gold rush hub and haven for outlaws.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

Legends surround this jagged rock formation in the New Mexico desert.

These aggressively sustainable art homes look like something out of 1970's science fiction.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

A quirky old tree covered in tokens, cans, and bottles of wishes.

This gallery of prehistoric red ochre art lines the wall of a scenic segment in Utah's San Rafael Swell.

A tunnel with windows, so you don't miss out on the impressive views.

A house carved into a rock in the 1940s.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Here, at the “world’s longest art gallery,” you’ll find forty miles of ancient petroglyphs and pictographs.

A spectacular overlook of the Little Grand Canyon of the San Rafael River, a deep sandstone gorge streaked with orange, red and white in a remote, uncrowded part of Utah.

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

The Russians still use the transmitter Nazis built during World War II to communicate with submarines.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

An out-of-the-way state park in Oregon that features both a picturesque waterfall and the ruins of a hydropower plant.

This bridge provides safe passage for squirrels.

A sculpture of a salmon swimming through a brick building.

A logging-themed roadside restaurant surrounded by museum-quality machinery and artifacts from the industry's heyday.

These unique volcanic rock formations offer the perfect opportunity to camp and hike.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

The remains of a historic ranch house that witnessed the Civil War battle dubbed the “Gettysburg of the West.”