Two discernible, yet mutually dependent systems combine in this expansion of the MoMA. The extension to the museum is suspended above a largely open, public ground plane, which looks into the theater below. The fluid galleries allow for seamless transitions between gallery spaces of different levels. Similarly, the merger of floor, wall, and ceiling into a single element enhances this fluidity while allowing unrestricted media art to envelop visitors and patrons. The second system wraps the first, creating a more discernible exterior, but refuses to play by the rules of a traditional skin. The single system transforms to function as weatherproof roof, solar screen, occupiable roof, wall, and floor. The perforated metal portion of this skin allows appropriate levels of sunlight during the day, but the building is transformed to a glowing beacon for public gathering and celebration of art by night. Views through and between these two systems, as well as views into the gallery spaces, enhance not only the social aspect of the project, but the art it contains.