Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

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

An abandoned stretch of highway, deteriorating next to the operational one.

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

A rare view of a preserved Victorian science museum.

A layered tribute to the work of mosaicist Isaiah Zagar.

Everything in this miniature world was handmade from matches, paperclips, wires, tin cans, and other everyday objects.

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

An outlandish shoe shaped house built by an eccentric millionaire.

The oldest farmer's market in America is so ancient it was approved by the King of England.

A failed piece of Orientalism has become the proud symbol of a community.

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.

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

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

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Mysterious rocks that ring musically when struck.

The home of pigs, snakes, chameleons, and the alleged largest bunny in the United States.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

This woodland architectural installation acts as a camera obscura for the heavens.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.