 The grounds comprise 18 acres.Irwin Arthur Yarnell, a banker from Minneapolis who helped develop Florida communities including Highland Park, built it for $1.5 million in 1923 and named it for his wife, Josephine; above the front door is a stained-glass window with her name in the grillwork, and there is a sculpture of her profile on a parapet.There were originally gardens including 2,000 species of palms.