RATP Bus Centre in Thiais that controls all the bus lines of the south and east of Paris was designed by architect , 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.