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

Home to a vast collection of The Wizard of Oz memorabilia and the site of an infamous theft.

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

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.

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

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

This ambitious attraction was the brain child of a lake resort impresario, and built by the WPA.

A bizarre house filled with an astounding array of collections.

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

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

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

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

The watery grave of an impractical idea.

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