Mercer Slough Environmental Education Center

All program participants 12 and older will be required to show proof of full COVID-19 vaccination or an approved negative test in order to enter indoor recreation and community facilities in compliance with Public Health of Seattle & King County’s Vaccine Verification Order. More Information

MSEEC Boardwalk

The Mercer Slough Environmental Education Center provides a grand entrance to the Mercer Slough Nature Park. Completed in October 2008, the complex features classrooms, a visitor center, a community building and a "tree house," all sustainably built. The City of Bellevue and Pacific Science Center offer year-round education about wetlands and nature for adults, youth and families at the center. 

Outdoor-only nature programs at Mercer Slough Environmental Education Center have resumed, and the facility is open for drop-in use. Search and register for programs, with "Mercer Slough Environmental Education & Park" in the location field.

Interested in the environment?  Become a Bellevue Master Naturalist!


  • A new program guide will be posted for MSEEC, Lewis Creek Park Visitor Center and Lake Hills Greenbelt Ranger Station when we reopen.
  • Park Scavenger Hunt - explore the park with your family!
  • Kids can earn a Junior Ranger Badge!  Are you looking for a fun and engaging way to inspire your children to connect with nature?  There are more than 15 activities you and your child can do together to explore and learn about Bellevue's natural areas.  See the web page for details.  


The MSEEC is a collaboration between the City of Bellevue and the Pacific Science Center. This partnership brings year-round education and interpretation of freshwater ecosystems, wetland ecology, environmental stewardship and the effect of urban development to adults, youth and families. MSEEC is the keystone of interpretive facilities and programs for the City of Bellevue and serves as the Eastside focal point for the Pacific Science Center. The MSEEC provides classrooms for environmental education, a visitor center for interpretation and a community building for rentals, community gatherings and environmental programs.

For more information about Pacific Science Center programs, please call 425-450-0207 or visit .

Green Building Features

The MSEEC was designed and built to have minimal impact on the environment. Special gutters, porous concrete and catchment ponds slow and filter water runoff at the site. Green roofs reduce impermeable surfaces and warming around buildings. Renewable, recycled, local materials, along with sustainably harvested wood were used in the construction of the buildings.

The city has received a gold LEED (Leadership in Energy and Environmental Design) rating. LEED is a third-party certification program developed by the U.S. Green Building Council and is the nationally accepted benchmark for the design, construction and operation of high-performance green buildings. See news release

Driving and Parking Directions

From I-405

  • Take Exit 12 for SE 8th Street
  • Travel west on Southeast Eighth Street
  • Take immediate left onto 118th Avenue Southeast, heading south
  • Travel about a half mile
  • Just before the first MSEEC sign (in light blue), take the first right into the parking lot.
  • Walk the path to the front of the buildings.

From I-90

  • Take Exit 9 for Bellevue Way. Continue for one mile.
  • Veer right onto 112th Avenue Southeast.
  • Take a right onto Southeast Eighth Street.
  • Take a right onto 118th Avenue Southeast.
  • Travel about a half mile.
  • Just before the first MSEEC sign (in light blue), take the first right into the parking lot.
  • Walk the path to the front of the buildings.

Directions, transportation and parking flyer

Additional Resources

Douglas Fir Community Building
Construction Information
Rental Information
Mercer Slough Nature Park Trail Map

Inclement Weather Plan

Call 425-452-2565 before travelling to Mercer Slough Environmental Education Center to ensure the facility is open.

In the event of inclement weather, the Parks & Community Services Department will make every effort to communicate the status of facilities and programs, special events and rentals. Administration will decide whether to cancel a program or close a facility based upon the safety of participants and employees and the ability to appropriately staff programs and facilities.

As a general rule, if the Bellevue School District is closed due to a weather event, Parks & Community Services Department classes and programs will be cancelled for the entire day. If the Bellevue School District is on a delayed schedule, call the facility for an updated status report. Select facilities may be open for drop-in activities at a modified level. If you are unable to reach the facility, call the Parks & Community Services Department's general information number at 425-452-6885. Inclement weather can affect park use and trail conditions. Please use caution when visiting park sites during poor weather, as trails and other park facilities may become wet and slippery. Park trails may be closed.

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Dustin Van Nieulande
Mercer Slough Environmental Education Center 

1625 118th Ave SE
Bellevue WA 98005 

10 a.m.-4 p.m. Daily