Population: 1.

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

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

Mysterious glowing orbs float through the desert night.

This is probably not the Target you're looking for.

Ghost town with a beer-drinking goat for mayor.

One of the most unusual geological features, recognizable from a dozen hit movies.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Images chiseled into the basalt here date back an estimated 300 years.

A wonderfully curated used bookstore in an airport.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

This enigmatic building features numerous architectural styles.

Quite simply the largest tree in the world (by volume).

"The Most Boring Road in the State."

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

The holiday spirit lingers year-round in the "Christmas City of the High Plains."

A new kind of theme park for adults off the Las Vegas Strip.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

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

Look closely and you’ll notice that the color changes a third of the way up the tower.