New Jersey's last historic covered bridge was rebuilt from pieces of the original 19th-century structure.

One of the oldest surviving Swedish-American homes in the United States.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

Hundreds of antiquated typewriters and office machinery show the technological evolution of business.

The longest covered bridge in Delaware.

The final resting place of one of the United States's greatest poets.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

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

A lightship turned museum, outfitted with artifacts from the vessel's past as part of the U.S. Lighthouse Service.

This unique creation was made by the largest manufacturer of Christmas bulbs in 1946 to honor those returning from World War II.

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

Pennsylvania’s creepiest roadside attraction is a haunting example of roadside kitsch.

Home to an eclectic collection of over 200 vintage motorcycles, Americana, and some of the most extraordinary antiques from all around the world.

This abandoned iron furnace was one of the first to use coke—a type of high-carbon fuel—to make iron.

These small house replicas have stood proudly since the 1950s, even as the property has changed hands.

This decommissioned surface-to-surface missile resides outside the American Legion Post in Pennslyvania.

A "house to which to flee" for settlers in colonial Pennsylvania.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

The site of America's first commercial oil well essentially disappeared after the town went bust.

A private residence adorned with a gorgeous mural dedicated to the buzzing insect.

Overshadowed by quilts, the artistry of these patterned textiles went underappreciated for too long.

This massive sycamore tree has been labeled as one of the largest in the state.