A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Mile-long cave system near Great Smoky Mountains.

The secret city built by the Manhattan Project.

More than five miles of underground passageways.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Enormous lake at the bottom of a unique cave system.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

First a root beer ad, then a golf course clubhouse, and finally a massive teapot.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

A quirky collection of outsider art made from automobile parts.

This oversize piece of novelty cookware once cooked the largest pancake in the world.

A larger-than-life statue of America's favorite sundae marks the place it was invented.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

A natural gas leak provides a flickering flame beneath a waterfall.

This two-room factory has been cranking out the musical signifier of zaniness for a century.

The birthplace of America's favorite fruit-flavored mystery dessert.

This lovely public park has an intriguing past and unique wooden bridges made of concrete.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

Learn about the history and craftsmanship of carousels inside this museum located in a former post office.