معهد العالم العربي
In 1981, Nouvel, together with Architecture-Studio, won the design competition for the Institut du Monde Arabe (Arab World Institute) building in Paris, whose construction was completed in 1987 and brought Nouvel international fame. Mechanical lenses reminiscent of Arabic latticework in its south wall open and shut automatically, controlling interior lighting as the lenses' photoelectric cells respond to exterior light levels.