A monument celebrating the idea of reaching inaccessible places.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

St. Augustine's record-setting narrow street was designed to protect against pirates.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

Ruins of a Carnegie family mansion on Cumberland Island.

Interactive modern and vintage submarine equipment, World War II relics, and submarine attire.

Five miles of underground river link lake to ocean.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

Maryland's first (and last standing) toll house on America's first federal road established the state as the "Gateway to the West."

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

One of the only memorials dedicated to journalists who died in combat.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

Built by the patriotic residents of Boonsboro in a single day.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

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

The world's oldest continuously operating airport was founded by the Wright Brothers.