This university transit system is a 1970's vision of the future.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

This restaurant offers a side of antiques, curios, and a bathroom chock full of owls.

This massive, ancient stone was disassembled and then put back together again.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

The subtle science of a master molecular gastronomist.

In a quiet north Chicago neighborhood rests a stunning relic of the golden age of earthenware design.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

The first and only museum dedicated to stained glass and horology opened outside of Chicago in 2017.

Orthodox church partially financed by Tsar Nicolas II.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

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

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

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

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

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.