Build a backyard corner bench with planter. Great for a patio or deck as well. Free plans at the link.
Build this beautiful corner bench which features a built-in table using these free woodworking plans.
Build this corner bench using stock cabinets and this free tutorial.
This is a link to a Google 3D SketchUp drawing for a corner planter bench. You will need the SketchUp software to download this drawing and its freely available online.