This friendly fellow was built to honor an advancement in mineral processing.

This institution celebrates the happy accidents of uncommon sticktoitiveness.

When waves crash onto this section of beach, the rocks sing a song.

Once part of a chain of over 80 restaurants that merged with another Mexican-American chain, it has been reborn in one of its original locations.

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

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

A giant ball made from pieces of an old Jeep.

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.

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

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

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

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

When oil was discovered just outside of Pittsburgh, the city became home to this regional stock market.

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

Tucked into Pittsburgh’s North Side, the Mattress Factory is a labyrinth of permanent, room-sized installations where artists transform entire spaces into mind-bending, immersive worlds.

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

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

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

There aren't too many operational funiculars around, but Pittsburgh has two!

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

Fans have made a utility pole near where the 90s musician was shot into an ersatz memorial.

A bizarre example of collective behavior resulted in thousands of shoe prints in Vegas parking lots.