A giant milk bottle from the 1930s beckons drivers to this diner.

A black cottonwood gets a second life as a home for books.

The oldest badlands in North America, Makoshika State Park takes it name from the Lakota words for broken land.

The world's largest Holstein cow.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

Measuring approximately 200 feet long, Swampy is the world's largest alligator-shaped building.

A statue honoring 44 continuous years of greeting passing ships.

Eternal resting place of the grave robber and murderer who served as inspiration for many of cinema’s famous madmen.

This deceivingly ordinary warehouse hides an enormous collection of pop culture treasures.

Tirelessly maintained by a Wisconsin man named JFK.

This odd-shaped relic from the 1964 New York World's Fair found its way back home to Wisconsin.

A mother’s sweet tradition lives on with this unique memorial.

This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

How did the 110-ton limestone statue cross the road?

Prayers and messages of hope decorate the ceramic tiles of this pavilion.

A renowned Civil War veteran, this Bald eagle now presides over the Wisconsin State Assembly.

Comprised of Spanish war cannons, this sculpture once graced the bow of a WWI warship.

A hundred-year-old museum filled with giant physics toys and experiments designed by grad students.

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

Where experiments are conducted on all things wood.

The arboretum whose marshy soil sucked up the dreams of housing developers.

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.

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

Software company Epic Systems has created one of the strangest and largest workplaces of all time.