The office boasts an 18-foot, barrel-vaulted ceiling, an architectural metaphor for inspiration and exaltation. Despite only visiting the site once before embarking on the four-year design process, Sottsass precisely placed picture windows to frame available views. "The windows are not done classically," explains Michael Dreyfus, CEO of Dreyfus Sotheby's International Realty. "You can't see out of them except when you're in front of them. David literally has to stop to see outside." The old oak tree that used to stand outside fell a few years ago, but the rock preserves a sense of deliberate placement.