Priceless space junk on display in front of a local Dairy Queen.

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."

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

For decades, it has disappeared and reappeared as water levels rise and fall.

"Where the ducks walk on fish."

Where the oil industry began.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

Could it have picked a better place to land?

An otherwise quiet campground becomes a bustling medieval town for two weeks every year.

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

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

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

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

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

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

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

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

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

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

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.

A giant ball made from pieces of an old Jeep.

Once used to screen films for theater owners to rent, this historic building is now a start up hub.