Travelers are voting Union Bay Natural Area as the best nature reserve near Seattle. There is 1 nature reserve near St. Helens a city just 123 km from Seattle. The most popular of these is Smith And Bybee Wetlands Natural Area near St. Helens. You can find 1 nature reserve in Washington and 149 nature reserves in the country of United States. Our members favorite in Washington is Union Bay Natural Area and Weedon Island Preserve is the top pick in United States. Want more? Check out our map of nature reserves near Seattle.