Stuck in the arcade of Casa Isolani are three arrows of mysterious origins.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

This zoological museum began as the first great curiosity cabinet.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

An amazing collection of wax anatomical models and terratological models.

An extraordinary collection of 18th century anatomical waxworks.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

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

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Illegal drag racing two stories beneath Chicago’s streets.

Hidden on the 7th floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

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

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

This historic hotel invented the chocolate brownie.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

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.