The illumination of Sainte Marie, this heritage Church, is aimed at enhancing its complex structure with light, to offer a subtle and improved legibility of this master piece of architecture, at night. The illumination has to be strong enough to the higher parts and to the cupola to offer the required visibility to this main landmark of Brussels. In the meantime, the illumination has to be very subtle to enhance all the details and increase the perception of its complex volumes. All lighting equipment is perfectly hidden on the building. Some fixtures are located on surrounding facades without causing glare, thanks to the appropriate accessories and the very focused light beams.