Some believe Ponce de León's mystical spring lurks right under a public drinking fountain.

Apartment complexes built into huge repurposed natural gas tanks.

Ride aboard a centuries-year-old steam engine and explore dozens of trains parts, including an unusual "comboose."

At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

When flour explodes, it's not a pretty sight.

When waves crash onto this section of beach, the rocks sing a song.

The Largest Little Museum in the Northwest.

A treehouse assailed by the elements and the government, now gone.

This sculpture is dedicated to Minnesota natives who served in combat.

This 25-foot-tall statue was built as a protest to a property dispute.

Nicknamed the "Grand Canyon of the North," this open-pit mine in Minnesota has a much shorter history.

This friendly fellow was built to honor an advancement in mineral processing.

It's believed the soldier was 109 years old when he passed away.

A chimney and a plaque are all that remains of a logging camp that once cleared out a large swath of Minnesota's old-growth forest.

The history of central Minnesota under one roof.

Home to a 26-foot-tall statue of an American icon.

This once prosperous community was home to European settlers and the Ojibwe.

A lone bronze figure stands in memory of historic a 19th century land grab.

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

Its collection contains relics from the devastating disaster that set the town ablaze.

For posterity, a singular achievement: 3,780 hours of dancing.

This tiny Minnesota city tried to secede from the Union as a last-ditch effort to fix its crumbling water system.

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