Cove lighting is a form of indirect lighting that is built into a ledge, recess, coffer, valance, or a similar architectural feature along the sides of a room near ceiling height. The perimeter cove is utilized to conceal luminaires which illuminate the ceiling or the top of the wall to create indirect light. Cove lighting is part of the ambient layer which should spread light evenly throughout the space to support comfortable movement and other basic visual recognition. Because the light from the indirect lighting system is thoroughly diffused, it produces a soft, shadow-free, and evenly distributed glow that creates a sense of openness and comfort. This gentle ambience is accompanied by a clean ceiling appearance, which interprets the architectural lighting requirement of illuminating architecture from architecture itself.