In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

Illegal drag racing two stories beneath Chicago’s streets.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

Despite its name, this fast food museum is actually a replica of the ninth McDonald's store.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

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

A display of magnificent stained glass windows is the first exhibit of its kind.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This historic hotel invented the chocolate brownie.

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

The palatial McDonald's that inspired Wesley Willis.

A beloved Chicago music venue offering cold beer and lots of “Friendly."

Hot Doug's "Hot Dog" Stand.

An enormous park-like oasis, full of famous Chicagoans' graves.

An antiquated German apothecary on Chicago's North Side.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.