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

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

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

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

Duluth mineral magnates built this charming art deco lodge to be their private clubhouse.

Where one of America's greatest songwriters lived before he was Bob Dylan.

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.

A technicolor place of worship for Elevationists.

This museum is a full-size replica of an original church constructed during the 13th-century.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

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

The Art Deco Silver Screen.