Catacombs turned marketplace.

A museum preserving one company’s history of preserving food.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

A winged-helmed, sword-brandishing tribute to German Americans.

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

One of the world's premier laboratories for hydraulic engineering research takes full advantage of the water's power.

A Museum Dedicated to the Heroes That Fight Fire.

A nerdcentric group and creators of the Nerd Prom.

After four years of grasshopper plagues, this chapel was erected as a plea to God to make them end.

A Building for Your (Former) Funerary Needs.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

The Art Deco Silver Screen.

A palatial art deco restroom.

An amazing collection of sculptures and art.

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

The oldest continually used church in Minneapolis also sells great meat pies.

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

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

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

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

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.

Enter the Forest of the Elves.

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

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