A century-old network of freight tunnels underneath the city's historic business district.

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

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.

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

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

The beloved home to all publications indie, erotic, and punky.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

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

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Years of archaeology, just chillin' by the water cooler.

Internationally known record store and purveyor of "dusties."

A haunting statue called "Eternal Silence" has quite the reputation among visitors with active imaginations.

The subtle science of a master molecular gastronomist.

An antiquated German apothecary on Chicago's North Side.

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

A Bibliophile's Dream.

This shop for all your super spy needs hides an educational secret.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

An annual celebration of the infamous, unsolved skyjacking.

This charmingly homemade amusement park has been growing for 40 years.

One man has installed bathtubs into the Utah desert floor to harness the powers of a natural hot spring.

A proto micro-nation sometimes populated by artists, surrounded on all sides by a Utah most barren.