Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The curiosities and wonders of pharmacy in a delightful historic building.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

Take a drunken tour inside the world's largest known geode.

An abandoned castle owned and ignored by Masons carries a cursed history.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A castle that was built stone by stone by an eccentric journalist.

A hands-on traveling collection of the innovative devices of yesteryear.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A monument to the art of slicing people open.

An underwater city for the dead.

Locals dubbed this abandoned abode the "gingerbread house" because of its odd architecture.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

A medical facility that has been kept frozen in time.

Kentucky's longest operating jail is now a spooky spot to spend the night.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

The longest navigable underground river in the United States is home to countless blind and albino animals.

This abandoned cemetery has a dark past of bodies buried over bodies.

The only building in Louisville (hopefully) that contains two ancient holy skeletons.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

The lynching and burial site of America's first train robbers.