Big Rock Park

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21805 SE 8th Street          MAP IT!

The 16 acre Big Rock Park features a nature playground and miles of trails. The playground boasts features like a zipline, hillside slide and earth mound tunnel. The park also features hidden surprises to encourage exploration.


  • 6:30 am - Dusk from April - September
  • 7:30 am - Dusk from October - March


  • Play Structure
  • Portable Restrooms
  • Trails



In 2010, 51 acres of property in the form of three connected parcels, was committed to the City by a Sammamish resident and after a community naming contest was named Big Rock Park. The first 15-acre parcel was donated in 2010 with playground improvements completed in 2016 is currently open to the public. Parcel B consisting of 20-acres was donated at the end of 2016 with public access slated for 2020.

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