This stone polylith serves as both a 100+ year old experiment and monument to the history of science.

This unusual rock formation in Berks County is nearly a mile long and may date from the Ice Age.

A secret, ethereal waterfall beneath the picturesque gardens.

This vintage short line in Amish country runs passenger steam train excursions and still hauls freight.

This museum focuses on the history and culture of the German settlers in Pennsylvania.

This is the spot where the bloodiest battle in the American Civil War may have started.

A huge railroad museum with over 100 pieces of rolling stock focusing on the railroad history of Pennsylvania.

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

This extraordinary model train layout covers over 1,700 square feet, with multiple trains running simultaneously.

This overlooked courtyard and museum celebrate Benjamin Franklin's life and achievements.

The train collection of an eccentric New England seafood mogul is now a National Historical Site.

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

America's oldest drive-in movie theater has been in continuous operation since 1934.

Where the famed frontiersman was born, raised, and survived Quaker intrigue

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

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.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

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

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.

Alexander Hamilton’s creation caused quite a bit of controversy.