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

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

Decommissioned NYC subway cars are dumped into the ocean to create this underwater wildlife habitat.

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

Destructive children, start your engines.

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

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."

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

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

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

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

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

This quaint New Jersey graveyard is an eternal resting place for thousands of beloved pets.

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

These old doors are covered in the signatures of Rehoboth Beach artists dating back to the 1930s.

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

A grotesque Fiji merman dwells within this traditional Dutch-style building.

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

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

The rusting remains are visible sticking out of the waters of the Delaware Bay.

World War II bunker still standing on the New Jersey beach.

Several times a year, during low tide, two pairs of historic train tracks are revealed on this New Jersey beach.