Alan Lapidus, a New York architect with a playful style who designed large hotels and casinos, died on Oct. 15 at his home in Naples, Maine. He was 85.

Mr. Lapidus’s legacy includes the towering Crowne Plaza Times Square Manhattan, which was designed to evoke a bedazzled Wurlitzer jukebox; the now-demolished Trump Plaza Hotel and casino in Atlantic City; the Caesars Palace hotel and casino complex in Las Vegas; and the Hilton hotel at Walt Disney World near Orlando, FL.

Mr. Lapidus did not try to outdo his father, Morris Lapidus, whose architectural motto was “Too much is never enough.” But he followed his advice, designing palatial lodgings and capacious gambling halls to create “participatory theater,” he wrote, in which guests could “indulge and fulfill their fantasies.”