A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

Each step is a mere four inches tall, said to be measured by the stride of a woman wearing a hobble skirt.

A neighborhood of houses made of poured concrete through a process invented by Thomas Edison.

An imposing pair of sphinxes stand guard outside this Egyptian Revival tomb.

The last street in Pittsburgh that's paved with wood.

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

This shrine dedicated to the Virgin Mary is also a tribute from a mother to her fallen son.

Chase waterfalls, hiking trails and more.

Remember and reflect at this 9/11 memorial site.

First a root beer ad, then a golf course clubhouse, and finally a massive teapot.

The iconic grave markers from George A. Romero's 1968 horror masterpiece,Night of the Living Dead.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

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.

Pittsburgh’s largest and most detailed model train display began as one WWI veteran’s hobby.

This riverside restaurant delivers elegant dining in a historic 1901 train depot. 

A T. Rex statue dressed as Mister Rogers honors the children’s-television pioneer.

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.

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

A private residence adorned with a gorgeous mural dedicated to the buzzing insect.

A towering tribute to old-fashioned laundry days, this giant washboard monument turns a simple chore into a playful spectacle!

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

An abandoned asylum incorporated into a college campus.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.