Illegal drag racing two stories beneath Chicago’s streets.

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

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

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

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

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

A six-story-tall golden pyramid, surrounded by a moat.

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

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

This elaborate Hindu temple is located in a Chicago suburb, but looks like it was transported directly from India.

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

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

Former hotel turned into haunted playground.

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

One of the largest aviation events in the world brings half a million aircraft enthusiasts to Wisconsin each year.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

More than 5,000 contemporary and "historic" mustards from around the world.

The center of the only hemisphere that awards visitors with a commemorative coin.

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

This pebble beach is so beautiful that taking its rocks is against the law.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

A bizarre house filled with an astounding array of collections.