This recreation of a 19th-century dime museum is full of oddities.

This abandoned iron furnace was one of the first to use coke—a type of high-carbon fuel—to make iron.

One of the first commercially successful anthracite-powered iron-making operations in North America.

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

This 15-foot tall obelisk commemorating the Philadelphia-Baltimore railroad connection sat neglected for over a century.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

An ideal wedding spot that is almost too ideal.

According to local myth this cemetery is half evil spirits, half good—split down the middle.

A hidden piece of Altoona's railroad history in a long-forgotten abandoned town.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

Locals call this magical moss-covered walkway the "Emerald Path."

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

Pennsylvania's own Roswell-style UFO mystery.

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

This elaborate towering structure was once famed for its revolutionary height.

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

Pennsylvanian mass grave and possibly mass murder.

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

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

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

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

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

The graffitied ruins stand hidden within the Pennsylvania woods.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.