
Cosmos Mystery Area Admission
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September 2026
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Who is going?
Adults
Age 13 and over
Children
Age 12 and under
Select a highlighted day to see live departure times and the exact price for your group.
Free cancellation up to 24 hours before. Same price on Viator, Outty earns a commission.
Traveler rating
4.6/5
Based on 232 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is Cosmos Mystery Area Admission worth booking?
Cosmos Mystery Area Admission is a 0.7-hour experience in Rapid City, United States, from $20 per person. It scores 76 out of 100 on the Outty Ranking, which we label “Strongly Recommended”, based on a 4.6/5 rating across 232 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 76 / 100
- Rating
- 4.6/5 (232)
- Duration
- 0.7 hours
- From
- $20 per person
Located amongst the beautiful Black Hills of South Dakota, the Cosmos Mystery Area is a unique, family friendly attraction. Guests can enjoy a 30 minute tour that displays how mystery, comedy, and science collide as they
What you get
About this experience
Located amongst the beautiful Black Hills of South Dakota, the Cosmos Mystery Area is a unique, family friendly attraction. Guests can enjoy a 30 minute tour that displays how mystery, comedy, and science collide as they participate in hands-on experiments and educational entertainment.
What's included
Included
- Local guide
Not included
- Food and drinks
- Hotel pickup and drop-off
- Transportation to/from attractions
What you'll see and do
Cosmos Mystery Area
The mystery house located within the Cosmos of the Black Hills was discovered in 1952 by two college students who were looking for the perfect place to build a summer cabin. Here, the laws of logic and physics seem to be turned upside down as you feel a slight unbalance in this crooked old cabin. Admission includes a 30 minute guided, interactive tour where you will be amazed as you see water run uphill, can stand on a wall, and see other incredible optical illusions. The tour consists of various demonstrations that are designed to boggle the mind. Located just minutes from Rapid City and Mount Rushmore, The Cosmos is sure to astonish and amaze the mind.
Admission included
Where it starts and ends
Meeting point
Cosmos Mystery Area
24040 Cosmos Rd, Rapid City, South Dakota, 57702-7414, United States
Hotel pickup
No pickup: everyone meets at the start point.
Ends at
Cosmos Mystery Area · 24040 Cosmos Rd, Rapid City, South Dakota, 57702-7414, United States
Before you book
- Cancellation
- For a full refund, cancel at least 24 hours before the scheduled departure time.
- Languages
- en
- Ticket
- Mobile Only
- Runs on
- Every day
- Group size
- Up to 15 travelers per booking
- Operated by
- Cosmos Mystery Area
Know before you go
- Suitable for all physical fitness levels
- Not wheelchair or stroller accessible
Photos






What travelers are saying
Outty’s summary of the themes that recur across 231 traveler reviews. Written by us, not quoted from reviewers.
The guide
8 mentionsTravelers single out the guide as the reason the experience works.
Good for families
7 mentionsReviewers traveling with kids report it landed well with their group.
Traveler reviews
231 verified traveler reviews for Cosmos Mystery Area Admission. Ratings and reviews provided by Viator and Tripadvisor.
One of the best fun and hilariously wonky and wonderful places in the Black Hills !!!
Our tour guide was FANTASTIC !!! It was so much fun and it’s awesome that they allow dogs. I was finally able to do the MJ lean (heehee). Price was great and to defy gravity I would literally pay anything. Could have been a little longer but was still awesome. Geode Mine was quite cool. All and all a spectacular trip!!!
via Tripadvisor
Great family fun!
It was a great time with the kids - kept us all guessing and laughing over the mystery! Elsa was a great tour guide. We opted to do the geode mining after the tour, which was also a good time. You only live once!
Response from the operator: Thank you very much for the very nice review. We really appreciate it.
via Tripadvisor
Enjoyable experience with Excellent Tour Guide
Excellent tour guide. Thomas was funny and engaging! Family really enjoyed the experience!
Response from the operator: Thanks very much!
via Tripadvisor
TIP YOUR TOUR GUIDES! This was fantastic!
This was a weird but great trip! Our tour Guide Emmitt was a great kid! The house tour and then the geode hunt was awesome! This is something everyone should experience at least once! The gravity itself, the “ level” house and whatnot …. Too cool!
Response from the operator: THANK YOU!!!! Our guides are our lifeblood and the customer touch point. We have an amazing group of “kids” representing us and we totally value the impact and importance of their contributions. TIP YOUR GUIDE!!!
via Tripadvisor
Family Visit
Emmett was a great tour guide!!! He had the perfect one liners to keep the dads in their place! He had us laughing the whole time!! They were also very flexible with our group as some of us were running behind.
Response from the operator: Thanks very much.
via Tripadvisor
Good to know
- Duration
- 0.7 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Every day
- Hotel pickup
- No pickup, meet at start point
- Booked in 30 days
- 81
- Verdict
- Strongly Recommended
Why this scores 76
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
Cosmos Mystery Area Admission: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Rapid City.
How much does Cosmos Mystery Area Admission cost?
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Prices start at $20 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Rapid City usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does Cosmos Mystery Area Admission take?
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Plan for about 0.7 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in Rapid City is not rushed.
Is Cosmos Mystery Area Admission worth it?
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It holds an Outty Ranking of 76 out of 100, which we label "Strongly Recommended". That score blends traveler sentiment (4.6/5 across 232 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable most popular in Rapid City, and how flexible the cancellation terms are.
Can I cancel or reschedule Cosmos Mystery Area Admission?
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Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.
Is Cosmos Mystery Area Admission suitable for kids and families?
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Yes, all ages are welcome. Families should still weigh the 0.7-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book Cosmos Mystery Area Admission?
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Around 81 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in Rapid City can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.
What should I bring or wear?
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Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Rapid City and add a light layer if any part of the 0.7-hour experience runs outdoors or after sunset.
Where does Cosmos Mystery Area Admission start and how do I get there?
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The exact meeting point and directions are on your voucher once you book, and they sit in central Rapid City within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.
What are the best things to do in Rapid City?
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Rapid City is the base for Mount Rushmore and Crazy Horse tours, Badlands National Park loops, Custer State Park wildlife drives and Black Hills cave visits. On Outty we rank every Rapid City experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Mount Rushmore and Black Hills Tour with Two Meals and a Music Variety Show, Bus Tour of Mount Rushmore and the Black Hills, PREMIER PRIVATE Tour: Mt Rushmore, CrazyHorse & Custer State Park. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.
When is the best time to visit Rapid City?
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May to September, with Sturgis crowding early August. Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.
How many days do you need in Rapid City?
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Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.
Do I book through Outty or through the operator?
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Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.
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