Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

This dramatic rail curve was once the target of a failed Nazi attack.

Nothing says indulgence like a 1,500-pound chocolate castle.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

Pennsylvania's own Roswell-style UFO mystery.

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

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

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

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

This plaque marks a place where one of Hollywood’s most famous dancers got his start.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

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

An ode to filmmaker George A. Romero, who used the mall to film an iconic horror movie.

The Pennsylvania shopping center was once the setting for the 1978 film, "Dawn of the Dead."

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

True to his word, George Swanson is buried in his white 1984 Corvette.

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