The ruins of an important pilgrimage destination for worshippers of a Maya fertility goddess.

Two massive rock outcroppings on the Oregon coastline.

A miraculous natural phenomenon known as "the spring that breathes."

A brick-paved former section of the historic coast-to-coast highway.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

Once named the “world’s oldest gas station” due to its unusual construction material.

It's safe—and permitted—to walk across these twin natural sandstone arches.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A museum chronicling pioneer life constructed over Interstate 80.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

A mecca of Mexican art and cuisine just over the border.

An unexpected sinkhole in a desert flat within Gold Butte National Monument.

Nearly 300,000 acres of wildlife, natural splendor, and a hidden ghost town have been designated a national monument.

This rest area is also home to a remarkable petroglyph site.

A surviving concrete arrow from a 1920s navigational network is preserved right off a modern freeway.

A cemetery housing wild west legends in South Dakota.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

This conservation area is also home to many of the region's desert tortoises.

This sign designates the road that leads to the infamous Area 51.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

This zombie-themed restaurant stands out in the heart of corn country.

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.