A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

Following years of secrecy, the hidden history of a World War II site is being brought to light.

The final resting place of many of Germany's most famous communists.

A Mormon place of exile in Missouri.

The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

The house where John Wilkes Booth conspired with his co-conspirators.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

Eighteen miniature death-scene dioramas.

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.

A submerged archeological park still holds the wonders of a Roman Sodom.

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

Go take a picture with the inventor of the daguerreotype photographic process.

An American city stranded at the tip of a Canadian peninsula where strict adherence to the "49th parallel rule" became problematic.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

Couple's personal collection of pinball machines turned public pinball museum.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

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

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

The mass grave of a heroic Revolutionary War regiment sits below an empty lot near the Gowanus Canal.