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

Thousands of majestic trumpeter swans fill this park, sounding distinctly like a certain brass instrument.

This iconic water tower and failed bandstand is open for panoramic views once a year.

Minnesota's highest point is a scenic vista marked by a plaque and armies of mosquitoes.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

This Minnesota town celebrated the state's 100-year anniversary by creating a massive ode to nature's smartest bird.

Journey through the largest remaining peat bogs in the contiguous United States to see the wilderness as it once was.

14th century Norse artifacts in Northwestern Minnesota could have proved a Viking landing before Columbus.

Duluth mineral magnates built this charming art deco lodge to be their private clubhouse.

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.

A riverside park built around the ruins of a massive dam that collapsed in 1909.

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

17,400 lbs., 12 feet in diameter, and 29 years in the making.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

Enter the Forest of the Elves.

This massive roadside mascot was the first version of the giant to illustrate his butt.

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

This large midwestern cavern features impressive rock formations and an underground waterfall.

Although it also features red, orange, and variegated cliffs of Navajo Sandstone, this state park is often overshadowed by its more famous neighbor.

In 1952, this restaurant began selling the Colonel's “secret” recipe.

Dozens of rockets and missiles are on display outside a testing facility in the Utah desert.

Almost all that remains of a town dedicated to supporting the First Transcontinental Railroad.

A unique collection of drawings that represent Fremont Native American culture.

The only remains of a 1918 section of Route 30.