A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

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

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

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

Locals call this magical moss-covered walkway the "Emerald Path."

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

Journey through a collection of over 35,000 Halloween items from all generations.

Pennsylvanian mass grave and possibly mass murder.

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

Pennsylvania's own Roswell-style UFO mystery.

An outlandish shoe shaped house built by an eccentric millionaire.

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

The Home and murder site of the witch of Rehmeyers Hollow.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

America's first serial killer rests in anonymity.

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

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

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

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