A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

Nature and art meet in this curvy creation

This whimsical park encourages its visitors and wildlife to roam on and around the various works of art.

A local scoured more than 1,000 acres for stone to create his masterpiece.

A watering hole where regulars who have ordered 500 beers have their names etched on the bar in gold.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

A former 19th-century tavern, famous for its peach brandy and honey concoction.

The world's longest known cave system.

One of the few surviving "Wigwam"-themed motels.

Once one of the most polluted caves in America, now an environmental success story and a museum dedicated to caves.

These disused steel furnaces are now haunting ruins that may one day be a national park.

Tucked into Pittsburgh’s North Side, the Mattress Factory is a labyrinth of permanent, room-sized installations where artists transform entire spaces into mind-bending, immersive worlds.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The last street in Pittsburgh that's paved with wood.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

The oldest surviving example of the aqueducts that crossed the Casa de Campo to distribute water.

Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

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

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

Soaring mural splashed across 70-year-old silos in Michigan.