A true roadside icon standing on the same plains that the herds once roamed.

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

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

The world's largest floating loon bobs in the lake to kick off an annual festival.

This vintage "streetcar boat" lay at the bottom of Lake Minnetonka until the 1980s.

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

One of two giant blue cockerel statues erected with an intentional double meaning.

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

The watery grave of an impractical idea.

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

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 home where a lovestruck Fitzgerald wrote his first published novel, "This Side of Paradise."

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.

A mapping error in the 19th century made loggers think this section of the forest was underwater.

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

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.

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

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