Steepest flood safety railway in the entire world.

These lush botanical gardens employ the most purrfect pest control force.

The mortal remains of a Russian prince, priest and paranormal investigator who came to America in 1792.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

Pennsylvania's own Roswell-style UFO mystery.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

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

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

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

The Home and murder site of the witch of Rehmeyers Hollow.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

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

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

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

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 eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

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

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

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

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