The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

An unrealized dream to wirelessly electrify the entire Earth.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Northern Ireland's Brobdingnagian stepping stones.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

Tucked in the back of this amazing antique store is an important piece of medical history.

Harlem park dedicated to compulsive hoarders killed by their own junk.

Unrepaired walls from a 1920 anarchist bomb attack.

A crumbling hospital from the 1850s on Roosevelt Island.

Toxic waste disaster that founded the Superfund program.

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

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

2300-year-old Roman road connecting the empire.

Civil War Fort on an island in the Boston Harbor.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

A giant Troll lurks under one of Seattle's oldest bridges.

At 207 feet, one of the world's longest continuous escalators.

A curious friendship between two inanimate ladies.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Two massive rock outcroppings on the Oregon coastline.

100-year-old shipwreck you can walk up to at low tide.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.