Niagara Cave

The Niagara Cave in Harmony, Minnesota, is not to be mistaken with the Canadian border waterfall. The cave was found in 1924 by pig farmers and is now one of the largest caverns in the American Midwest, with a dramatic 60-foot underground waterfall and a variety of interesting limestone and calcite formations. Between April and November, hour-long guided excursions explore a mile of the cave's underground corridors.

Since 2015, the cave site has also been home to many family attractions, including a miniature golf course and a gemstone mining activity, and it has been the world's first entirely zero-emissions display cave.

Location: 29842 Co Hwy 30, Harmony, MN 55939

Phone: 507-886-6606