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

The literary king of the Jazz Age was born in this lovely Minnesota home which still honors his legacy.

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

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A fitting attraction for the corn capital of the world.

A cemetery housing wild west legends in South Dakota.

A science teacher's dream.

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

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

Elevated freight railway turned wildly successful urban park.

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

Odd, decrepit fountain honors Chicago author who had mixed feelings about his hometown.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

Over 1,000 pieces of one of the most niche art objects imaginable: the glass paperweight.

Huge abstract sculptures of the Puerto Rican Flag.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

No one knows how many bodies are in this vault in a Chicago public park.

To find the "unicorns of the deep" you've got to go downstairs.