This multisensory alley has the ability to remind bustling citygoers to stop and smell the roses.

The property contains 37 preserved animal effigy mounds constructed by Native Americans between 800-1100.

This rooftop sign has been confusing Milwaukee-bound airline passengers for decades.

A unique botanical garden housed in three giant geodesic domes.

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

Built in France in the 1400s, this gothic chapel now resides at Marquette University in Milwaukee, Wisconsin.

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

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

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

A humble plaque marks the site where the country music legend was found dead in his Cadillac.

One of just a few cities in the world to base their center of government on an island. Others: Paris and Osaka.

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

This tiny historic jail along Route 66 is the perfect fit for exactly one criminal and their partner-in-crime.

This historic Illinois "Muffler Man" has been converted from axe-touting lumberjack to rocket-wielding space ace.

A historic and oft-filmed prison stands in a Chicago suburb.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

This old steel industry company town has a tradition of parking cars on the sidewalk so people can walk in the narrow streets.

First planned industrial community in the United States.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

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

This monument owes its name to a quote by the famous civil rights activist and journalist.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."