Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This vintage "streetcar boat" lay at the bottom of Lake Minnetonka until the 1980s.

The biggest museum dedicated to insects in North America, one of the largest in the world.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

World's first "penitentiary," meant to be humane, drove men insane.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This sandstone mansion was the home of two of Oregon's most important pioneers.

A theme park attraction designed to turn your children into LARPers.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

This Parisian gem is one of the most incredible ethnographic museums in the world.

A collection of pianos and more guaranteed to delight anyone interested in music history.

An amazing collection of sculptures and art.

This iconic water tower and failed bandstand is open for panoramic views once a year.

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

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

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

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.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.