The only arched bridge made of stone on the entire Mississippi River.

The only remaining collection of flayed figures made by French "madman" Honoré Fragonard.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Strange physical sensations and optical contradictions keep visitors coming back for more.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.

See six states, pickled freaks, rocks, and antiques.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

Ever wanted to can Spam?

A museum within a museum, devoted to history's most questionable medical devices.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

20,000 pieces in a Frank Gehry-designed building.

When flour explodes, it's not a pretty sight.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

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