I would have rated this lower but my 10-year-old little sister thought it was fun. It's an optical illusion, takes 1 hour max, and costs $10/person. They give you a tour through old cabins that were built on a slant to make it feel like gravity has shifted. Typical tourist trap.
If you own or manage Cosmos of the Black Hills, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.