An allegedly haunted testament to a local businessman's desire for status, posterity, and charity.

A gazebo that inspired the fifth episode of the "Twilight Zone" still stands in the creator's hometown

A memorial to the 1913 tragedy that helped protect the workers of the future.

This local landmark is home to art galleries and the area's only community darkroom.

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

Pennsylvanian mass grave and possibly mass murder.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

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

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

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

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

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

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

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

The oldest farmer's market in America is so ancient it was approved by the King of England.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

This Old Testament garden features 100 plants from biblical times.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

The oldest surviving botanic garden in the United States.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

This little museum in the town where zombies were born celebrates the living dead.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.