Eccentric concrete mansion and museum designed and built by hand from the inside out.

In which a local geological marvel becomes a quaint roadside attraction.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

A beautiful oddities shop crammed with strange and morbid curiosities.

Mysterious rocks that ring musically when struck.

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

An important piece of history from mankind's journey to the moon sits in the lobby of a government science lab.

This comprehensive collection features Native American artifacts dating back centuries.

Giant telescope mirrors built in a spinning furnace under a college football stadium.

Arizona's first government hub is a rustic cabin now preserved as part of a historical museum.

This Native American settlement dates back to the Pueblo II period.

This remote desert watering hole has a connection to a curious chapter of American history.

The state's only comprehensive museum dedicated to the mineral that defined its history and economy.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

A cabinet of curious mathematical models and old calculators.

A small canyon with petroglyphs and a seasonal waterfall, only a short hike from the remnants of old Route 66.

The largest source of fossilized insects anywhere.