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

This cave holds a surprisingly colorful variety of geological oddities.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

A house and yard adorned with bizarre concrete sculptures in a Milwaukee suburb.

Artifacts of whaling, with both its perils and adventure, are housed in this museum in a former candle factory.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The subtle science of a master molecular gastronomist.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

A geological mystery on Camelback Mountain.

These pretty kitties killed and ate as many as 135 railway workers.

A hot dog stand where the heads are just as hot as the dogs.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

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

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

A large circus museum with summer performances.

A bizarre house filled with an astounding array of collections.

A bypass decorated with large wooden troll carvings.

More than 5,000 contemporary and "historic" mustards from around the world.