Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

This reclusive Hopi village in Arizona has been continuously populated longer than anywhere else in America.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

The biggest solar telescope in the world helps reveal the secrets of our sun.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

This historic national park is covered in the stunning ruins of red rock pueblos.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Ancient pueblos built into the base of a natural canyon wall.

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

America's only nuclear missile silo open to the public.

A reproduction of earth's many biomes.

A self-built castle made by a mysterious man.

An homage to everyone's favorite prehistoric cartoon family.

Dramatic river bend surrounds a natural red-rocked pedestal.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A monument marks the location of the first successful steamboat demonstration.

The highest point in Maryland is only accessible by hiking through another state.

The world's largest fully steerable radio telescope.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.