This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

Nothing says indulgence like a 1,500-pound chocolate castle.

This stately 19th century library pushed architectural boundaries at a time when the public library movement was just taking off.

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.

Descendants of this colonial Pennsylvania family still travel from far and wide to visit the 300-year-old home of their Quaker ancestors.

It marks the spooky spot where the bodies of two young boys were found in the 19th century.

Penn State's giant bug collection.

A preserved 18th century homestead in Western Pennsylvania marks the spot where the Whiskey Rebellion began.

A planned settlement in Pennsylvania once housed the aristocratic refugees of the French Revolution.

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

Long hidden under grime, the politically radical murals of a little known Yugoslavian master are finally getting their due.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

This eccentric mansion museum holds a impressive collection of rare and automatic instruments.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

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

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.