2. Howell Park
One of the most secluded beaches in Seattle proper, this tiny park isn't even marked on official maps. The trail down to the beach is between a pair of driveways, but once you get down there you'll discover that — unofficially, of course — this is the town's only clothing-optional swimming hole. The rest is up to you.
1740 E Howell St, Madrona (206-684-4075)