Lines from a walking song are etched into a rock in Natural Bridge State Park.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Railroad came. People came. Railroad left. Town died.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

An alternate history park where the Union Army loses the war... to dinosaurs.

This campus chapel is Robert E. Lee's final resting place and a topic of debate about the legacy of the Civil War.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

This Great Depression-era creation was once known as the strangest house in the world.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

A completely round house designed for the Atomic Age.

Rising out of a clearing in New Jersey's Pine Barrens is an Aztec-inspired monument to the "Lindbergh of Mexico."

Step inside Lucy, the world's largest "elephant."

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

An unusual and eclectic collection of local historical memorabilia.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.

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

The remains of an old sawmill, gristmill and the surrounding industry dating back to the 18th century.

A statue of the English poet for whom this Delaware town is named is ritually dressed in seasonally appropriate clothing.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

The historic home still shows the scars from a little run-in with the British in 1813.