In Palm Springs, the mecca of midcentury modern architecture, Sunnylands is considered the undisputed masterpiece. With its pastel green and yellow interior, giddy pink roof, dazzling collection of Impressionist paintings, and long, low sofas that look like vintage Cadillac convertibles, the estate was a Versailles for the Space Age. Envisioned by A. Quincy Jones, one of California's most important architects, and possessing the only completely preserved interior by California's great decorator to the stars, William Haines, there is no other house like it anywhere.