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

These huge stone ovens in the desert fueled the Nevada silver boom, and may have also been a hideout for outlaws.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

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

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

Despite monuments in other locations, this spot in a South Dakota field is recognized by the U.S. National Geodetic Survey as the center of the 50 states.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

Thousands of turbines whir at at the origin of North American wind power.

Where a railroad loops under or over itself to rise or drop more than 70 feet in a short distance.

Shakespeare has been brought to life in this open air theater for the better part of a century.

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

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

At the base of the Spring Mountains, a unique nursery packed with desert plants.