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

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

Dr Barnes' $25 billion private collection of art and arboretum.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

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.

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

The oldest surviving botanic garden in the United States.

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

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

In which a local geological marvel becomes a quaint roadside attraction.

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

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

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

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

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

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

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

A layered tribute to the work of mosaicist Isaiah Zagar.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

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