This elaborate towering structure was once famed for its revolutionary height.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The oldest surviving botanic garden in the United States.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

Step inside Lucy, the world's largest "elephant."

Amazingly, this old machine within the Resorts Casino still functions.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

This collection honors the iconic, and proudly American lighter that just won't quit.

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

Eccentric concrete mansion and museum designed and built by hand from the inside out.

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

A failed piece of Orientalism has become the proud symbol of a community.

In which a local geological marvel becomes a quaint roadside attraction.

Beautiful views of the surrounding hills and birds of prey can be found at this sanctuary.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

A field of nothing but boulders which resembles a giant's gravel driveway.

It would take 35 firetrucks to fill this enormous glacial pothole.

A winding, cliffside stretch of road overlooking the Delaware River.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

This park contains a number of standing stones meant to heal and inspire.

Mysterious rocks that ring musically when struck.