This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

The site of the climactic scene from the classic horror film is now a historic landmark.

FDR's Art Deco hospital tower was hopelessly inefficient.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

The smallest covered bridge in Maryland.

A small 19th-century graveyard tucked away in the middle of a suburban neighborhood.

The Decoy Capital of the World.

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

America's first serial killer rests in anonymity.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

America’s smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A daily replay of the experiment that proved the rotation of the Earth.

One-time largest man-made structure in the world will be a park in 30 years.

Final resting place of two dozen New York City harbor ships.

In the middle of suburban Staten Island, a nearly 150-year-old bakery is preserving the art of a disappearing New York treat.

A town trapped in time - 1958 to be exact.

Failed state-supported institution meant to rehabilitate students with intellectual disabilities.

An unexpected Easter egg lurks in the background of a cherub wall relief at the Breakers mansion.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.