Once on display alongside a giant Gumby, it’s as tall as a nine-story building when fully extended.

A local prank turned town icon.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

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

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

Pennsylvania's own Roswell-style UFO mystery.

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

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

An outlandish shoe shaped house built by an eccentric millionaire.

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

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

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

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

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

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

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

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 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!

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

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