- Please support our journalism through affiliate links. Affiliate Disclosure
Review:
Niagara Cave is located in Harmony, Minnesota.
- The cave was originally discovered by pig farmers in 1924 and is among the largest caves in the American Midwest today, showcasing a spectacular 60-foot underground waterfall and a variety of unusual limestone and calcite formations.
- Hourlong guided tours explore a mile of the cave’s underground passageways, offered between April and November.
- The cave site is also home to several family-friendly attractions, including a miniature golf course and a gemstone mining attraction, and has been the world’s first completely zero-emissions show cave since 2015.
29842 Co Hwy 30, Harmony, MN 55939, Phone: 507-886-6606
Niagara Cave is 2.5 from Minneapolis, MN.
Plan Your Trip
Get Ready to Go!
- Search flights and stays nearby.
- Book your tour or local activity.
- Book your car rental.
Need some more help?
Read our Reservations & Travel Planning Tips guide.