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

Pennsylvanian mass grave and possibly mass murder.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

It would take 35 firetrucks to fill this enormous glacial pothole.

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

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

The Home and murder site of the witch of Rehmeyers Hollow.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

America's first serial killer rests in anonymity.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

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

A historic covered bridge is but one example of an oddly prevalent American urban legend.

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

This public space is speckled with the eerie remnants of a defunct amusement park.

The ruined remains of a coal mining ghost town are hidden within the woods.

The abandoned coal loading dock is a canvas for unsanctioned art.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

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

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

This park contains a number of standing stones meant to heal and inspire.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

In the early 1800s, surgery was also a show.