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

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

A unique botanical garden housed in three giant geodesic domes.

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

Complex aquaponics systems allow fish and plants to grow in harmony.

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

Robots, lasers, and whoopee cushions, oh my!

The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

The preserved remains of the former Milwaukee County Hospital for the Insane are hidden in the wooded grounds of County Park.

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

This lakefront cottage was crafted in the 1800s and was once a sanitorium.

This lush 12-acre site was once named the finest Japanese garden in North America.

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

A museum of the dime museum that features weird entertainments of yesteryear, from feejee mermaids to flea circuses.

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

A bizarre house filled with an astounding array of collections.

A former barn converted into a massive train diorama.

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

The tunnel that runs beneath this former inn was once a hiding place for enslaved people seeking freedom.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

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

Mile-long cave system near Great Smoky Mountains.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.