The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

This folk art compound was built by a fortune teller on the advice of three people from the future.

An eerie, decaying ghost town destined to fade into the forest.

A beautiful oddities shop crammed with strange and morbid curiosities.

Dedicated to an "Unknown Man," this grave holds either the remains of a lovelorn suicide or a Cold War spy.

The Home and murder site of the witch of Rehmeyers Hollow.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This attraction was abandoned after the Chernobyl disaster.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

The first of Lancaster's "rural cemeteries."

An astounding collection of medical specimens, including bits of President Lincoln.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

A model home in the Medical Examiner's Office in which grisly death scenes are staged to train forensic investigators.

Eighteen miniature death-scene dioramas.

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

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.