This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

These pretty kitties killed and ate as many as 135 railway workers.

A curiosity-seeker's paradise set inside a three-story historic school house.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.

The short-lived history of a new republic and British control in West Florida.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

A Rodeo for Prisoners.

A 19th-century Gothic, castle-like statehouse by the Mississippi River.

Turning night into day in Victorian-era Austin to thwart a serial killer.

The most loyal of little dogs, or a Victorian era publicity stunt?

The final resting place of soldiers' loyal canine companions.

When you can't get to the Pacific, just go to Florida.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The last remaining bottle-shaped kilns in Scotland stand alone in an Edinburgh suburb.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

This charming English house was once the home of England's most famous poet.

What was once England's second-richest abbey is now a haunting ruin.