RATP Bus Centre in Thiais that controls all the bus lines of the south and east of Paris was designed by architect Emmanuel Combarel Dominique Marrec, ECDM. Both are ardent supporters of contextual architecture, taking structure, restrictions linked to function and the socio-cultural concerns of the surroundings into account. Located in the southern suburban area of Paris along wide boulevards and roadway interchanges, in an industrial landscape characterised by a succession of boxes, at best basic, RATP Bus Centre in Thiais accommodates 300 buses, 800 bus drivers forward through the building every day, plus the administrative staff.