A modernist landscape of water and sci-fi concrete.

An emerald-green grotto just a short trip from Austin.

Descendants of this colonial Pennsylvania family still travel from far and wide to visit the 300-year-old home of their Quaker ancestors.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

One of the oldest Catholic churches in the U.S., situated just east of Gettysburg.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

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

The first of Lancaster's "rural cemeteries."

An ideal wedding spot that is almost too ideal.

An otherwise quiet campground becomes a bustling medieval town for two weeks every year.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

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

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

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

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

A local prank turned town icon.

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

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

This eccentric mansion museum holds a impressive collection of rare and automatic instruments.

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

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

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

This Old Testament garden features 100 plants from biblical times.

The oldest surviving botanic garden in the United States.