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

This steep-walled ravine contains animal-shaped formations made from sandstone.

Over thousands of years, this slot canyon was carved out of the bed of an ancient lake.

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

A river with some unusual, and occasionally dangerous, habits.

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

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

A factory in Milwaukee where poop is reclaimed… and recycled.

Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

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

A circus of light and sound forms a sensory ode to an iconic train that will never pass through town again.

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

The final resting place of Gary Gygax; co-creator of Dungeons and Dragons.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

This plaque marks a place where one of Hollywood’s most famous dancers got his start.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

The world’s largest digital waste dump has become a site where organized criminals hack into confidential government data.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

There aren't too many operational funiculars around, but Pittsburgh has two!

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

Once used to screen films for theater owners to rent, this historic building is now a start up hub.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.