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

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

Delicate Wurlitzers, creepy clowns, and The Noid all share space in this insane explosion of kitsch history.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

This little museum in the town where zombies were born celebrates the living dead.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

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

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

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

Contrary to popular belief, this secluded statue doesn't represent Pennsylvania's founder.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.