A sconce or wall light is a decorative light fixture that is mounted to a wall.[1] The sconce is a very old form of fixture, historically used with candles and oil lamps. 

An electric sconce in the lobby of a luxury hotel

They can provide general room lighting, and are common in hallways and corridors, but they may be mostly decorative.[1] A sconce may be a traditional torch, cresset, candle or gaslight, or a modern electric light source affixed in the same way.