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

Shop of curiosities with a dinosaur museum tucked in its basement.

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

The 606 is a decade in the making.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

Medical museum focused on antique anesthesiology equipment.

Cold War missile launch site which has been converted to a public park.

A remote hill on a stretch of country road where the laws of physics are defied... or so it seems.

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

A bizarre house filled with an astounding array of collections.

The remains of a enormous earthen figure of unknown origins cuts across a rural Wisconsin road.

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

Every winter, the wind carves blocks of frozen water into beautiful abstract shapes inside this unusually curved tunnel.

This forgotten beach house built to look like a Frank Lloyd Wright masterpiece overlooks a hidden beach.

The final resting place of one of Thomas Jefferson's formerly enslaved sons.

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

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

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

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

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

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

A forgotten Cold War relic hidden in the outskirts of a Wisconsin city.

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

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