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

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

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

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

This secluded walking trail is a hidden gem of a Pittsburgh park.

An overgrown garden stands as a grim marker of an unrealized dream.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A jukebox headstone marks the grave of the Cleveland disc jockey credited with coining the term “rock 'n' roll."

The only presidential monument to display a late POTUS's actual casket.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

The angel of death appears to weep black tears at this grave marker.

In an odd geographic anomaly this city borders two different states on opposite sides of town.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

The oldest continuously operating fish market in the United States.

At 207 feet, one of the world's longest continuous escalators.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

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

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

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.

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