Simon Benson was a lumber magnate, philanthropist, and one of the principal promoters of the Historic Columbia River Gorge Highway. Located one mile west of Multnomah Falls on I-84 at milepost 30 , picnickers love this park; there's even a disc golf course and a reservable shelter for groups.
Try your luck catching some of the thousands of rainbow trout stocked each month into the lake between March and October. This is a non-motorboat lake, (no boat launch) so it's perfect for rowboats and swimmers.
When the trees start changing color in the fall you can get some great reflection shots. The Columbia River is just across the highway, or further to the left of this image.