An old soap company building now houses one of Minneapolis’s oldest independent non-profit art galleries.

Giant granite rocks standing end-to-end like a train of circus elephants.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

This is not your typical jungle gym.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

Less a museum than a bizarre fantasy world created by artists and engineers.

These curious caverns have been home to mushrooms, gangsters, and disco.

Direct, creative challenge to Mother Nature's winter wrath.

Sleepy Minneapolis block beats Guinness Record for most churches on one city block.

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

A Building for Your (Former) Funerary Needs.

An architecturally-focused antique shop.

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

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

France's most famous cemetery, with some of its most curious tombs.

This bridge was constructed from the rubble of the infamous Bastille.

Indents in the pavement are all that remain from a grisly death machine in Paris.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

The celebrated eyesore created by starry-eyed sweethearts.