The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Odd outsider art installations surround a Gold Rush-era ghost town.

A cosmic pit stop just beyond the notorious Area 51.

See massive fossils that are over 200 million years old in northeastern Arizona.

John Wayne, Ronald Reagan, and other Hollywood actors have resided in this picturesque Route 66 hotel.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The echoes of a railroad town that solemnly mark the end of the line.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

Towering basalt columns, a creation of fire and ice.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

The largest open-air contemporary art center in South America is a unique experience in the Atlantic Forest.

The 20-mile causeway that separates the Netherlands from the sea.

An awe-inspiring giant blue whale jaw bone stands in the center of this Dutch island.

This Moab institution functions as both a rock store and a small natural history museum.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

"The Most Boring Road in the State."

This missionary's legacy looms large over the Upper Peninsula of Michigan—literally.

An experimental, automotive replica of Stonehenge.

Otherworldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.