The first spinning jail built in the United States is the only one that still turns.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

A medical facility that has been kept frozen in time.

This graveyard is home to the so-called "Witch's Circle."

The rodent-shaped sidewalk imprint that earned worldwide media attention.

A massive bur oak tree believed to be some 500 years old is the centerpiece of this quiet urban greenspace.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

This softly rounded mansion was built without corners not to avoid evil spirits, but to make them more comfortable.

This historic house museum that celebrates one of the world's most influential social reformers is also one of the most haunted locations in Chicago.

Today this bizarre rooftop phone booth seems like a piece of kitsch but it was once used to spot disastrous storms.

This titanic Catholic church in Chicago is also a refuge of the fictional cult-favorite wizard detective Harry Dresden.

The oldest house in Chicago certainly doesn't look the part and there are some who say it doesn't deserve its title either.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

A river with some unusual, and occasionally dangerous, habits.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

The 30,000-volume library is one of the world's most impressive poetry collections.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

Medical history museum featuring a lovely doctor's office from the 1800s.

A semi-scholarly approach to sex.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

A museum within a museum, devoted to history's most questionable medical devices.