The Governor As’Ad Pacha Al’ Azem constructed the Caravanserai in Damascus in 1749. Khan As’Ad Pacha is a unique construction in its genre. The intervention of transforming it into a museum brings with it a difficult problem of creating functional spaces while preserving the identity of the place. A restoration work and at the same time a project work. Natural light which reaches inside is scarce. The rooms have only a few small openings. All the space is in half-light. Natural light which arrives from the circular opening at the center of eight cupolas serves principally to change aspects. The new illumination system uses reflected light. Fluorescent tubes are put in cuts made in the wall. The obtained result is that of a soft light, without shadows, which is adjustable and does not heat up. On the walls there is no visible interference from the illumination bodies or from the electricity wired. The simplicity of the luminous cuts does not disturb the architecture. I wanted to enhance the spatiality of the place by intervening on light. The cuts are the luminous signs that are “internal” to the constructed. They do not overwhelm the space because they become space. The materials and the techniques adapted in the project are traditional ones. The finishing work is still under way.