In the power of this waterfall, Alexander Hamilton saw the potential for industry.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

Step into a pastel time capsule where candy is truly dandy.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

A toxic ghost town sitting atop a massive coal fire.

Home to an eclectic collection of over 200 vintage motorcycles, Americana, and some of the most extraordinary antiques from all around the world.

A former plant in one of the hubs of U.S. steelmaking has been turned into this museum celebrating the history of American industry.

A beloved horticultural oasis on the grounds of a wealthy family's former estate.

This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.

This shop filled with oddities and knick-knacks is named for a 19th-century charlatan.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

According to local myth this cemetery is half evil spirits, half good—split down the middle.

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

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

A rock maze opens up to a panoramic viewpoint at an abandoned mine full of ghost stories.

A glittering Thai Buddhist temple in suburban Pennsylvania.

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

Pennsylvanian mass grave and possibly mass murder.

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

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

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

This park contains a number of standing stones meant to heal and inspire.

In the early 1800s, surgery was also a show.