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.

A largely forgotten and touching neoclassical marble fountain overlooking a bear mound effigy.

Small-town museum dedicated to outer space ... and bicycles.

A former barn converted into a massive train diorama.

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

A place to eat for on-the-run agents and espionage enthusiasts.

This 85-year-old fireplace in an urban woodland is dedicated to a poet who recognized the beauty of a tree.

Each of these 87 large stones has a unique message. Together, they form part of the Minnesota Military Family Tribute.

A piece of solitude and tranquility in the heart of East Saint Paul.

Thousands of people walk over this fantastic work of art every day, but how many notice it?

The literary king of the Jazz Age was born in this lovely Minnesota home which still honors his legacy.

A 115-year-old restored German dining hall awaits those who venture beneath the Minnesota State Capitol.

These curious caverns have been home to mushrooms, gangsters, and disco.

A classic mystery spot complete with spots that are said to make you shrink or grow when you stand on them.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

The site where Michigan launched its first rocket into space lies abandoned in the dense woods along Lake Superior.

This little barrel-shaped cottage by Lake Superior was once a cartoonist's summer retreat.

More than 150 snowmobiles fill this Michigan museum.

This 19th-century ghost town offers a stunning view of Lake Michigan and a journey through the region's industrial past.

Largest outdoor staircase in the United States.

A museum celebrating the self-taught artist-environment builder.

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

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

This unique zoo is the only place in the world where you can see all 15 species of crane.