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

The famous bell was secreted away and hidden in a church in Allentown during the British occupation of Philadelphia.

Hundreds of protractors affixed to surfaces all over the city.

This forgotten building was one of the few Philadelphia-area breweries to survive Prohibition.

Steepest flood safety railway in the entire world.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

A local prank turned town icon.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

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

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

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.