What do Boeing, the Seahawks, Wizards of the Coast, IKEA, and Providence Health have in common? Renton! The Cedar River flows through Renton into Lake Washington and there are many parks and natural areas surrounding it including Cedar River Park, Cedar River dog Park and the Cedar River Trail. There is even a boathouse! Check out the Henry Moses Aquatic Center or Hazen Pool or take a dip in the lake at the Gene Coulon Memorial Park.