A Civil War Museum with some notable medical antiques.

The land is home to swimming ponies and a legendary 18th-century treasure.

A museum dedicated to exhibiting remarkable outsider art.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Century-old shop, specializing in Occult products.

A well-preserved example of an early industrial operation in the northeastern United States.

The first marker along the famous boundary.

This iconic Lancaster everyman has been reading the same story since 1980.

The meeting of the northwestern corner of Delaware, the northeastern corner of Maryland, and the southern edge of Pennsylvania.

These unique rock formations were created during the Ice Age.

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

The first of Lancaster's "rural cemeteries."

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

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 historic old movie house was the scene of one of the Blob's most iconic attacks.

One of the oldest of its kind.

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

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

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."

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

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

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.