Mercer Slough Environmental Education Center
Onsite Operations Update
Pacific Science Center’s onsite operations are currently closed due to COVID-19. However, we are continuing to serve the community, including offering Virtual Field Trips, while we plan for our renewal.
Visit Mercer Slough
Located on a biologically diverse 320-acre wetland nature park in the heart of urban Bellevue, WA, Mercer Slough Environmental Education Center is a collaboration between PacSci and the City of Bellevue.
Visit the Center and talk to a Park Ranger, learn more about Mercer Slough Nature Park, and get involved with the adult and family programs, camps, private events, and more.
Curiosity Never Closes: Support PacSci
While we are closed to the public, we are still serving the community. We depend on support from you.
Mercer Slough Programs
Kids & Families
From preschool to camps to Wild B’earthday parties, we offer engaging programming that will ignite your child’s curiosity in nature.
Teens
Jumpstart your teen’s experience in environmental education with our innovative programs.
Private Events & Groups
Looking for private events and activities to do with a large group while connecting with nature? We have something for everyone.
Teachers & School Groups
Plan your next field trip, classroom lessons, or check out our educator resources.
At Mercer Slough
Hours
Education Center: Monday–Friday, 8 a.m. – 4:30 p.m.
Ranger Station: 10 a.m. – 4 p.m.
Admission Cost
Admission to the Mercer Slough Environmental Education Center and park is free!
Getting to Mercer Slough
Location
The Mercer Slough Environmental Education Center is located at:
1625 118th Avenue SE, Bellevue, WA 98005.
View the map below for additional information.
Parking
The Mercer Slough Environmental Education Center has a parking lot onsite. People can park there for two hours or less.
If you are attending a program longer than 2 hours, please request a parking pass from the Registration Team at 206-443-2925 and park in the yellow stalls only. If the yellow stalls are full, please park along the street (118th ave SE). Feel free to drop off kids with staff at the Center before parking and walking.
Additional Information

Mercer Slough
1625 118th Avenue SE
Bellevue, WA 98005
For more information about Mercer Slough, call (425) 450-0207.
To register for our programs, call (206) 443-2925.
Accessibility
Mercer Slough is an ADA accessible site. There is an accompanying ramp or elevator for every space.
Trails have an ADA accessible entrance, as well. The trails are either wood chip or gravel, and once in the nature park all of the trails are flat.
Please contact us at (425) 450-0207 if you have additional questions or concerns.
FAQ
Are there bathrooms onsite?
Yes, there are fully functioning bathrooms at Mercer Slough Environmental Education Center.
Where is the Center?
The Center is the only building onsite shaped like an old farmhouse. There is signage on this building directing people to the front door.
Is there food onsite?
No, there is not food onsite. There are food options close, though, and are ~5 minutes away from Mercer Slough. Guests are invited to bring their own food.
Is there space that I can reserve onsite?
Yes, there is a Community Room that people can reserve onsite. This is managed through the City of Bellevue. Learn more
Upcoming Mercer Slough Events

320-acre Wetland Park in the Heart of Urban Bellevue