This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

The land is home to swimming ponies and a legendary 18th-century treasure.

An out-of-place Air Force radar dome is all that denotes this park as a former missile launch site.

The only place for a truly presidential dram.

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.

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

A drab two-story office space in Delaware is a hidden tax haven for Hillary Clinton, Donald Trump, and over half the Fortune 500 companies.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

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

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

The longest covered bridge in Delaware.

A rural colonial settlement that contains the remains of a store and cooper.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

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

The Decoy Capital of the World.

The only one-room schoolhouse remaining in Talbot County, Maryland.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

In 1787, a group of delegates met at this very spot to drink, be merry, and ratify the Constitution of the United States.

Museum houses an impressive display of the origin and artistry from the now-quaint invention's history.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.