This unique library spans a mighty river.

These memorials built by an eccentric bachelor on the side of Interstate 5 cause both wonder and traffic accidents.

A roadside statue store in rural Minnesota with quirky displays.

The highest point in Iowa, while not that impressive to mountain states, has earned its own monuments.

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

A lifetime's accumulation of bric-a-brac and kitsch.

The abandoned remnants of a little sanctuary for world peace that fell into disrepair.

Underneath downtown Lincoln resides a network of caves that was also the city's first brewery.

Over a million artifacts fill this factory-turned-museum that explores the history of American windmill production.

This once rural mansion now sits in the heart of the city.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

Haunted dolls, macabre artifacts, and more make up the collection of the “most haunted museum in the world.”

This small, but beautiful waterfall has attracted visits from artists, composers, and two United States presidents.

Nicknamed the 'Minnehaha Bunny,' this bronze sculpture is nine feet long and weighs 1,500 pounds.

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

Explore the History & Technology of Electronic Communication

A museum dedicated to the exploring past, present, and future innovations.

A public art project at Bde Maka Ska that educates visitors on Dakota history.

This landmark honoring a local beer brand is an iconic part of the Minneapolis skyline.

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

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

The final resting place of Gary Gygax; co-creator of Dungeons and Dragons.

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

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.