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

This quirky roadside attraction provides insight into Minnesota's logging 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.

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

The watery grave of an impractical idea.

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

A spooky defunct railroad tunnel now part of a sprawling trail.

An amazing collection of sculptures and art.

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.

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.

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

A jaw-dropping brutalist space church seems to have crash-landed in the middle of America.

The first hand-illuminated, hand-written bible since the invention of the printing press.