Temporarily Closed



Mobius has followed state guidelines throughout the pandemic and lifted our mask policy on March 12th. Wearing a mask is optional for all visitors at Mobius.


Being a high-touch facility, safety will remain our number one priority. We appreciate the continued support and dedication of our members and community!

Plan Your Visit


Birthday Parties

We have birthdays down to a science! You bring the guests, we'll do the rest!

Masks + Covid

Masks are mandatory for everyone – no exemptions. Masks not required for children ages 3 & under. Facial coverings must cover nose and mouth. Effective 8/23/2021 in accordance with WA Secretary of Health Order 20-03.4. Not able to wear a mask? Not feeling well? Have COVID symptoms? Even if you’re vaccinated, we ask that you don’t visit Mobius at this time. Experience Mobius at home by purchasing a STEAM Kit HERE. Being a high-touch facility, safety will remain our number one priority. We appreciate the continued support and dedication of our members and community!

Upcoming Events

All Month

Eat Well, Play Well Exhibit

Exhibit closes June 5th, visit today!

How much force do you have to exert to burn off a snack? Which burns more calories: raking leaves or mowing the lawn? Explore the science behind nutrition, fitness, and the food we eat with Eat Well, Play Well. Reminder – Mobius will be closed June 6 – 9 for exhibit move out.

All Month

STEAM Lab – Rainbows & Light

Discover how you can use light to study rainbows! The Lab at Mobius hosts fun, hands-on learning experiences. Monthly STEAM Labs are open to all Mobius visitors! *Hours are subject to change.

All Month

STCU member days at Mobius

Every Sunday, from June 5 – August 28, STCU members can visit Mobius Discovery Center for a free day of exploration and discovery. Show your STCU debit card, credit card, or other proof of membership at admissions, and get free admission for up to four visitors.

Geology Day!
10:00 am
  - 2:00 pm
Father’s Day Fun Class
10:30 am
  - 11:15 am
Father’s Day
11:00 am
  - 5:00 pm

Big News

After much deliberation, Mobius has consolidated its two locations. The children’s museum, formerly located in the lower level of River Park Square, has moved into the space that the science center occupied in the Post Street Annex of the historic Washington Water Power building. Together, the children’s museum and science center have transformed into Mobius Discovery Center.


Mobius Discovery Center has taken advantage of the strongest aspects of the play-based children’s museum and the inquiry-based science center, incorporating them into one discovery center. The space inside the historic building has been revamped to include the most popular exhibits from both the children’s museum and the science center.

Sparking Curiosity

Igniting Imagination

Sparking the curiosity of younger children through exploration, play, and the arts, and igniting imaginations of all ages with fascinating exhibits, technology, and skill-building activities. Mobius Discovery Center provides a unique continuum of experiential learning that cultivates critical thinking and problem-solving abilities – foundational skills that create lifelong learners. Mobius is a nonprofit 501(c)(3) organization.

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