World's second largest particle accelerator, where nature reveals its secrets.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

A onetime gangsters' hideaway where you can dine on steaks, fine wines, and cigars just like they once did.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.

This lush 12-acre site was once named the finest Japanese garden in North America.

This deceivingly ordinary warehouse hides an enormous collection of pop culture treasures.

The tunnel that runs beneath this former inn was once a hiding place for enslaved people seeking freedom.

This supper-club-turned-concert-venue still serves drinks at its original rotating bar.

The site of an ancient Mississippian settlement that appears to have flourished during the 10th to 13th centuries.

Robots, lasers, and whoopee cushions, oh my!

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

This striking art museum holds an amazing series of curiosity cabinets.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

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

Statue dedicated to the star of an old television show.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

With 8,000 pipes this giant instrument is the most versatile theatre pipe organ ever built.

Its eclectic exhibits range from the world’s first motorcycle to Luke Skywalker’s Land Speeder.

This sprawling mini-golf empire is an impressive testament to a disappearing attraction.

The study has wall paneling from a 17th century ship.

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.