A precise and elegant geometric sculpture by visionary designer and theorist Buckminster Fuller, *Closest Packing of Spheres* renders in chrome-plated steel rods and molded thermoplastic connectors the mathematical principle by which spheres arrange themselves most efficiently in space. Smoky grey acrylic spheres cluster symmetrically around a central red acrylic sphere, making visible the hidden structural logic Fuller believed underlies natural and universal organization. The work bridges art, science, and philosophy, reflecting Fuller's lifelong pursuit of understanding nature's own design strategies.