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Serving Middlesex County and Surrounding Areas

3 Stories of Tubes and Tunnels

40’ long 8’ high rockwall for lots of fun and adventures.

The Ultimate Indoor Playground

The perfect place for kids to be kids!

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Contact Us Today

We can’t wait to have fun with you!

Why Choose Us?

  • Our programs are centered around enhancing each child's self-esteem
  • Encouraging fitness in a fun and safe environment
  • Comprehensive Indoor playground

The Premier Family Fun and Fitness Destination in Eastern Massachusetts


COVID-19 Update (June 8, 2020):
We have been closely monitoring developments in our area and around the country concerning the COVID-19 situation. Based on information available to us, we initially paused our public operations in mid-March.  We are thrilled to announce that WE ARE BACK (and better than ever)!!
Ninja and Gymnastics classes will recommence on June 15th, and we will finish out the Session Three program that was interrupted by State’s Stay-at-Home order.  From there, we will proceed into our Summer session.  Look for emails with further details, or give us a call.  Not ready to return to the Gym yet?  No problem.  We will keep a credit on your account and provide maximum flexibility for its use (future lessons, Summer camps, special events, etc.).
Looking for a Summer Camp option for your family?  We’re taking registrations now for a limited-enrollment Summer Camp, following the guidelines provided by the State and our health consultants.  Contact us for details and availability.  Please see our 2020 Revised Summer Registration Form.
For members of our indoor play facility: We will keep your membership paused for now until we get further guidance from the re-opening task force, with the remaining term re-commencing when Gymania re-opens.  If you’d prefer to keep the membership paused until an even later date or would like to use that credit for another product or service, no problem.  Let us know.
If you had a party scheduled that was interrupted by the Stay-at-Home Order, please contact us to discuss alternative dates/times.  We are developing an awesome Pool/Gym Combo option for birthdays.  Or, if you prefer to use that credit for another product or service, no problem.
We hope your quarantine has been restful and uneventful.  Ours??  Well, we can’t wait for you to see what our Quaran-Team has been up to over here.  They have the facility painted, polished and sparkling for your return.  We’re training on new protocols and procedures.  And, we’re looking forward to your return.  This place just wasn’t meant to be quiet . . . .
Questions in the meantime? Shoot us a message on Facebook or leave us a message if we don’t catch your call.  We can’t wait for the fun to start again!
Thank you!



Encouraging Fitness in a Fun & Safe Environment

At One Stop Fun, our main goal is to provide a fun and active environment for your children. Our entire team believes in creating a fun space with activities that boost self-esteem and encourage fitness. We are fully committed to providing a high-quality experience to all of our customers and we want every customer to have a safe and fun time. We are fully equipped with a number of outstanding amenities such as an advanced Ninja training rig, outdoor Olympic-size pool, zip line, three whole stories of tunnels and tubes, foam pit, traverse rock wall and more. Call us at (978) 692-9907 to request more information about our classes and services. Click here for our 2020 Class Schedule.

Open to the Public Daily

Indoor Adventure Center Admission (non-special event): $12/Child

* Become Members for discounted admission deals and many other valuable benefits.

Parents and siblings under 1 year old are free. Ask about options to purchase monthly/annual memberships or passbooks in advance for big savings on your playtime fun.


Indoor Adventure Center: Monday through Saturday – 9:00 to 6:00; Sunday – 10:00 to 6:00

We also provide a wide assortment of programs, activities, and services including: Whether your child is taking a class, exploring the three stories of tubes and tunnels in our Ultimate Indoor Playground, or climbing our indoor rock wall climbing structure, you will love your time at One Stop Fun. Our wide array of offerings is sure to spark the enthusiasm of children of all ages, interests, and skill levels. Spend some time enjoying our unique and comprehensive indoor playground for an entire day or just a few hours. When your child wants a break from playing our snack bar provides delicious options for lunch or just a snack to recharge the batteries.

Plan a Visit to One Stop Fun Today

We have a committed staff that is dedicated to creating a positive and enriching environment for your children while they are here. As always, adults and children under one are free when you come to our Westford facility. Contact us at (978) 692-9907 to register for a class, to book a visit, or to request more information about any of our other activities or options!

We Are a Nut-Free Facility

We are a completely nut-free facility. Out of respect for our customers with nut allergies, we do not sell or allow products containing nuts in our facility. Please, no outside food or drinks allowed without prior authorization by management. Thank you for helping us keep everyone safe, healthy and happy!


  • Gymnastics

  • Tunnel

  • Pool