Decommissioned experimental solar facilities that pioneered solar energy technology.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

The unusual burial monument of Arizona's first governor.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

These passages carved from the Antarctic ice hold strange shrines to the harsh southernmost climes.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

The largest source of fossilized insects anywhere.

Bill Murray bowled three straight strikes here at Reno's "Taj Mahal of Tenpins."

Boise State's stadium was the first non-green football field in the world.

This historic national park is covered in the stunning ruins of red rock pueblos.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

A ghost town that held steady longer than most, but finally gave up the ghost.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.