A tower for wind turbine is provided, including an outer wall encompassing an inner space and including a through-hole having a central axis, and a light source configured to emit light through the through-hole into an environment surrounding the tower, wherein the light source lies on the central axis of the through-hole and is arranged inside the inner space of the outer wall. The serviceability and maintenance of the light source is improved since the light source can be easily accessed by maintenance personnel operating inside the tower.