A pergola can serve as a great enhancement to any building or open space. Pergolas provide shade as well as a unique visual appeal. Pergolas may act as an extension of a building by covering an open area, such as a terrace, that is adjacent to the building. Freestanding pergolas, those not attached to another structure, provide a sitting area that allows for a breeze and light sun, but offers protection from direct sunlight. Pergolas are also used in gardens to provide climbing plants with a structure on which to grow.