Denny Blaine Park is a 2 acres water-front park in the Denny-Blaine neighborhood of Seattle, Washington. With picturesque views of Bellevue directly across the lake and Mount Rainier in the distance, it is primarily used for picnicking, sunbathing, and swimming. The park has also been one of Seattle's unofficial queer- and trans-friendly clothing optional beaches since the 1970s.
The park area consists of three tiers, in addition to a grassy area within the oval loop of E. Denny Blaine Place. The upper level between the parking lot and the original seawall is grass covered and has several large trees that provide shade. The middle level between the lake-side base of the seawall and the beach area is also grass. The lower lake level encompasses a sandy beach area with a rocky shoreline that is covered with small, smooth river pebble extending the first few feet into the lake.
Wikipedia https://en.wikipedia.org/wiki/Denny-Blaine_Park_(Seattle)
Official Website http://www.seattle.gov/parks/park_detail.asp?ID=3982
Coordinates 47°37'12.505" N -122°16'50.003" E