Its diverse collection of computers and technology spans the ages.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A rare view of a preserved Victorian science museum.

Mysterious rocks that ring musically when struck.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

A Natural History and Science Emporium.

Visit the site of a subway powered by nothing more than air--and lots of it.

Where the Monitor was launched and ushered in the age of the "ironclads."

A 13,000-year-old mastodon skeleton was found during the construction of a 19th-century New York mill.

Fabrication workshop where the encasement for One World Trade Center's beacon was constructed.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

A living antique aviation museum in the historic town of Red Hook, New York.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

Antique skeletons and taxidermy creatures were found crammed in a university closet.

This private island is still in the family after a 400-year history including a witch hunt and a pirate.

Whale bones, scrimshaw, and sperm oil make up just a part of this comprehensive collection of whaling history.

The remains of what was once the world's steepest passenger funicular.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

The second-largest (of only two in the world) large particle collider is the underdog of experimental physics.

Crammed into several rooms of a Staten Island home, this museum is a vodka-soaked paean to the pleasures of drinking.

A distillery built on (and above!) mobster Dutch Schultz's Prohibition-era underground moonshine business.

Believe It or Not, Ripley once called this chiseled mountainside “New York’s Mount Rushmore”.