The invention relates to an illumination system for a wall, a ceiling or a floor (5), comprising at least one point-type light-emitting body (2), which is connected to a light source by means of a fibre-optic (4) and which when mounted is recessed in relation to a surface (6) of the wall, the ceiling or the floor (5). Said system also comprises a transparent protective body (3), which when mounted covers the light-emitting body (2) on the surface (6) side and lies flush with said surface (6).