Minnesota's highest point is a scenic vista marked by a plaque and armies of mosquitoes.

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

Elaborate drama imparts an appreciation for 19th century hardships.

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

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

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

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

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

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

Tirelessly maintained by a Wisconsin man named JFK.

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