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

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

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

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

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

This historic furnace was once used to produce cannonballs during the Civil War.

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

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

One of Philadelphia's largest murals resides hidden under this bridge.

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.

Memorializing an American tragedy of massive proportions.

A diorama of the Civil War, fought by cats.

The first of Lancaster's "rural cemeteries."

Hundreds of protractors affixed to surfaces all over the city.

This public park was the site of the largest civilian disaster of the Civil War.

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

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

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This beloved marketplace mascot poops money and grants good luck.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.