This old residential building was once the largest flour mill in the world.

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

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

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

The watery grave of an impractical idea.

The basement bowling alley of this St. Paul dive bar is decorated with thousands of dollar bills.

Elaborate drama imparts an appreciation for 19th century hardships.

This taxidermic smorgasbord was co-created by an artist poached from the Museum of Natural History.

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.

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

The only arched bridge made of stone on the entire Mississippi River.

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

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

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

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A toweringly silly piece of modern art has been delighting locals since the 1980s.

20,000 pieces in a Frank Gehry-designed building.

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

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

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

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

Go surfing on this urban wave, "hacked" by local surfers.

A fearsome dragon clings to a corner of Munich's city hall.

The prototype for all Nazi concentration camps.