This stately 19th century library pushed architectural boundaries at a time when the public library movement was just taking off.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

This jail which was in service for over a century is now open for curious visitors.

A toxic ghost town sitting atop a massive coal fire.

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

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

Intricate storybook scenes are tucked inside these shadow boxes, which are tucked inside a library in the Pocono Mountains.

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

This might just be the TARDIS of bookstores.

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

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

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

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