Adding Permanent art that will withstand harsh winters adds an element to the garden that stands on its own and/or complements the evergreens, grasses and other plants that have winter interest. A bench or sculpture can be a focal point or destination. Arbors, Pergolas, cement benches/sculptures and boulders add interest year round. In a primarily shrubs/perennials garden, elements that span the seasons, anchor the garden and add interest throughout the year.