Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

Opulent downtown movie theater now houses cars as an indoor parking garage.

The first declared National Monument in the United States.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

Home of the "true" equator.

Steaming blood-red hot spring from hell.

The 10,000 Torii shrine.

An artist's cute bronze subway sculptures belie his violent artistic past.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

Little Red Lighthouse under the George Washington Bridge.

This simple home was the beginning of a long journey for the iconic Western film star.

Urban explorers embraced America's now demolished first suburban mall, south of Chicago.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

This striking art museum holds an amazing series of curiosity cabinets.

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

A curious sculpture garden and museum in Cochrane, Wisconsin.

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

This is not your typical jungle gym.

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

What is the Thing?

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.