19-acre public park located on the north shore of Lake Union with panoramic views of the lake and the downtown skyline. The park was originally the site of a coal gasification plant, and many pieces of the old plant have been incorporated into it – industrial towers, stacks, pipes, and a boiler house which has been converted into a picnic shelter. In addition to the remnants of the plant, the park contains a Great Earth Mound, molded out of the rubble from on-site excavated materials and covered with fresh topsoil. At the summit of the mound is a sundial which uses the shadow of the viewer to tell the time of day and season.