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

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

This Old Testament garden features 100 plants from biblical times.

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.

This might just be the TARDIS of bookstores.

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

The oldest surviving botanic garden in the United States.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

A park full of outsider art, created by college students studying outsider art.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

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

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

A beautiful oddities shop crammed with strange and morbid curiosities.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

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.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Where America's first doomsday cult awaited the end of the world.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

World's first "penitentiary," meant to be humane, drove men insane.

This museum is dedicated to the first coast-to-coast highway.