One believer transformed a local curiosity into proof of Vikings on the Great Plains.

An ADA-accessible trail and deck offering stunning views of Colorado’s Mount of the Holy Cross.

The symbol was surreptitiously built into the river bank by German prisoners of war.

Hidden in the New Mexico desert southeast of Roswell, nine small deep lakes formed inside sinkholes.

The only nuclear weapon assembly and disassembly plant in the U.S.

It's where the final scene of the beloved Tom Hanks movie was filmed.

Together they left this world, and together they shall remain for all eternity.

It took more than 20 years and a sharp eye for one man to assemble this quirky collection.

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

The largest land animal skull ever discovered.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

A relic of roadside lore and perhaps the first of its kind in North America.

High in the Sacramento Mountains, a facility dedicated to studying the sun.

The largest underground lake in Europe.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

Located along historic Route 66, this former gas station has been restored and converted into a museum filled with vintage motorcycles.

Along the historic Mother Road is an old gas station with a secret counterfeiting past.

Nature's biggest mammal swims in landlocked Oklahoma.

The granite monument is engraved with the image of the talking horse's head coming through a barn door.

The final resting place of the camel who served with the Confederate Army during the Civil War.

A preserved stretch of ancient fossilized trees with an impressive gem collection to boot.