A reversed traffic signal that was once violently misinterpreted as a statement on British-Irish relations.

The quarry was abandoned over 100 years ago, after a massive ammunition explosion ended in tragedy.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

This roadside dinosaur park offered up lumpy neon thunder lizards in the name of kitsch and education.

World's largest herd of white deer populate a former U.S. Army depot.

A rusted blade sticks out from the trunk of this tree, left as a memorial to a young man who left to fight in the Civil War but never returned home.

Home on the Hillside, and home of the first breakfast cereal.

A collection of unique outdoor sculptures surounded by the beauty of nature.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

The shelves in the back of this thrift store are devoted to saving, not selling, retro tech.

Built in 1815, the stabilized ruins of the grist mill and sawmill are now gated, but interpretive displays on the features and functions of the mill preserve its history.

The ruins of an old mill lie in a small ravine along a hiking trail near Little Seneca Creek.

The whole world in one water tank.

The hidden ruins of a mill that is linked to an attempt to assassinate the vice president of the United States.

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

Unannounced visitors are now welcome at the site of the largest Prohibition-era bootlegging operation in the region.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

A rock maze opens up to a panoramic viewpoint at an abandoned mine full of ghost stories.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

Memorial stone for GWAR vocalist, depicted in his iconic costume.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

A home built with marble tombstones from the graves of 2,200 Union soldiers buried in a Virginia cemetery.

The real-life site of Ichabod Crane's infamous gourd attack.

This Queens hospital has stood abandoned for almost 20 years after its patients were secretly relocated in the dead of night.