These amazing sandstone caves are located along the Mississippi River in downtown St. Paul, and cover 12,000 square feet.
The caves been home to mobsters hiding out, underground speakeasy events and other spooky business. There have been numerous sightings of ghostly figures and orbs in the darkness here, so be prepared for anything.
The Lost Souls Tour is the winner; the hosts dress up (which can be a bit cheesy) for the one-hour walking tour and keep in mind that it can get cool in the caves. You can visit their website here.