This double-arched masonry highway bridge is the only structure of its kind in Minnesota.

Built in 1931, this small passageway is believed to be the first modern skyway.

World's largest carved onyx figure stands as a tribute to enduring peace.

A museum within a museum, devoted to history's most questionable medical devices.

A collection of pianos and more guaranteed to delight anyone interested in music history.

This statue of Olympic hockey coach Herb Brooks immortalizes one of the greatest moments in American sports history.

An unusual assortment of art, furniture, and other curiosities.

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

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

This water tower has been a staple of the Rochester skyline since 1931.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

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

Minnesota's oldest and deepest mine is now an underground physics laboratory.

Half of a waterfall goes into the river while the other half seems to disappear.

A giant granite cross remembers missionary Father Frederic Baraga, and his safe passage across an angry Lake Superior.

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

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

This institution celebrates the happy accidents of uncommon sticktoitiveness.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

The watery grave of an impractical idea.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

A spooky defunct railroad tunnel now part of a sprawling trail.

The famed architect designed this Minnesota gas station of the future with a lookout tower.