Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

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

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

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

Hidden behind West Philadelphia rowhomes is a haven for migratory and local bird species both ordinary and rare.

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

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

The graffitied ruins stand hidden within the Pennsylvania woods.

This picturesque stream was up until recently the site of a ten story mountain of slag and sewage.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

The last street in Pittsburgh that's paved with wood.

These lush botanical gardens employ the most purrfect pest control force.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

A field of nothing but boulders which resembles a giant's gravel driveway.

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

An outlandish shoe shaped house built by an eccentric millionaire.

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

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The oldest surviving botanic garden in the United States.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.