18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.

Deep scars on the earth left by the Ice Age.

The highest point in Indiana is curated by an Eagle scout but may be in danger of losing its record to a nearby garbage pile.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

A miniature world of concrete and stone in Springfield, Ohio.

Inside, ancient treasures. Outside, modern contradictions.

Where beautiful signs live on forever.

A suspended garden, now gone, once hung in the middle of this abandoned church.

What is it about mushrooms that makes people wish they lived inside of them?

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

A castle built by an eccentric medieval enthusiast in rural Ohio.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

Once on display alongside a giant Gumby, it’s as tall as a nine-story building when fully extended.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

A cabin completely covered in coffee mugs, where visitors are welcome to leave one of their own—if they can find an empty nail.

A Nessie-like monster supposedly lurks in this lake.

Rotting dome home spotted near Chapel Hill, North Carolina.

Art museum based around the collections accumulated over 58 years by one eccentric thrift store owner.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

This vast kitty-themed collection illustrates the history of human-cat interaction.