The only labyrinth within the city of Alexandria.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

Intricate storybook scenes are tucked inside these shadow boxes, which are tucked inside a library in the Pocono Mountains.

Could it have picked a better place to land?

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

The largest collection of Frazetta originals in the world.

An ideal wedding spot that is almost too ideal.

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

A glittering Thai Buddhist temple in suburban Pennsylvania.

The first marker along the famous boundary.

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

This semi-spooky remnant of an abandoned hotel provides fantastic views.

A wonderous place devoted to art and metal.

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

Outside a small brewery, a Gothic fountain that once provided water to thirsty horses.

Visitors to Salt Springs State Park are encouraged to literally put their two cents in Penny Rock.

A planned settlement in Pennsylvania once housed the aristocratic refugees of the French Revolution.

No one knows who painted this mysterious mural in a Penn State basement.

These hooded graves are the only of their kind in the United States.

A menagerie of concrete animals brought together from across New York City's parks.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

This harrowing climb along West Virginia's jagged spires is one of the only Via Ferrata on America's east coast.