Of all of Fuller’s domes, the Biosphere is perhaps the most spectacular. At a diameter of seventy-six meters, the expansive sphere reaches an astounding sixty-two meters into the sky and thoroughly dominates the island on which it is located. The volume contained within it is so spacious that it comfortably fits a seven-story exhibition building featuring the various programmatic elements of the exhibit. Even amidst the Exposition’s other impressive attractions—including Frei Otto’s steel cabled German Pavilion and Moshe Safdie’s iconic Habitat 67—the Biosphere reigned supreme, attracting an event-high 5.3 million visitors within six months of its opening. [1]