Singing sand that stands as the final remains of an ancient lake.

This cave was hidden for thousands of years, storing the worldly goods of ancient Native Americans.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

This glacier interpretation center houses the world’s only bar made completely from glacial ice.

A vast landscape of craters created by meteorites.

A Swiss man built this airstrip for aliens because a UFO captain telepathically told him to.

A small sculpture garden that provides a microcosmic representation of California.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

Offering commanding views of the California coastline, this restaurant was a hub for the artists and bohemians of Big Sur.

An enclosed rotunda at the Henry Art Gallery in which viewers can look up and see the uninterrupted sky.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

This former Texas landfill is flush with 300 million-year-old fossils, all fit for the taking.

Radioactivity still cause for concern at this urban explorer's paradise.

Abandoned anti-ballistic missile base.

This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

Cambria's most unique B&B features creative surroundings and fantastic food.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

The rocks of a certain area of Butte, Montana give off a musical ring when hit.

The largest source of fossilized insects anywhere.

A regular looking rock with an unbelievable history.

A cave's rare beauty held a cavernous secret hidden underground.

A creepy steel gremlin has protected the Bay Bridge since 1989.