There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

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

The penultimate and final resting places of British General Edward Braddock—minus a few bits and pieces.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

Catch a ride through the Pennsylvania countryside on this historic narrow-gauge railroad.

Surrounded by industrial sprawl, a small monument marks the site of William Penn's first landing in Pennsylvania.

Home of the only civilian casualty at the Battle of Gettysburg.

These hooded graves are the only of their kind in the United States.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

Beautiful views of the surrounding hills and birds of prey can be found at this sanctuary.

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

Memorializing an American tragedy of massive proportions.

A diorama of the Civil War, fought by cats.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.

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

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

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

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

Steepest flood safety railway in the entire world.

This beloved marketplace mascot poops money and grants good luck.

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