The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

Former villa and estate of James Deering developed to preserve native tropical forests.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

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

Wisconsin's most celebrated export gets the royal treatment on I-94.

A place to eat for on-the-run agents and espionage enthusiasts.

A lush green oasis in the middle of Chicago.

First planned industrial community in the United States.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

A hollow cement depiction of time's inexorable effect on the human body.

The 606 is a decade in the making.

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

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

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

A Bibliophile's Dream.

An antiquated German apothecary on Chicago's North Side.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

A science teacher's dream.