This dramatic rail curve was once the target of a failed Nazi attack.

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

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

Steepest flood safety railway in the entire world.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

A daily replay of the experiment that proved the rotation of the Earth.

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

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

A local prank turned town icon.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

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

There aren't too many operational funiculars around, but Pittsburgh has two!

Yo, Adrian!

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

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

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

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

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

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

Eccentric concrete mansion and museum designed and built by hand from the inside out.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

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