Built ca. 1924 by Maurice Fatio for Otto Kahn, a banker and railroad consolidator, as his second Palm Beach residence. The original name of the residence, “Oheka,” comes from the first letters of Kahn’s full name: “O” from Otto, “He” from Herman, and “Ka” from Kahn, a naming convention that matches Kahn’s first Palm Beach residence and original residence in New Jersey.

The Otto Kahn residence, later to be part of the Graham Eckes School, is a fine example of the formal Italian Renaissance architecture of Maurice Fatio. The mansion, which faces the Atlantic Ocean, was constructed ca. 1924 to resemble an elegant Tuscan Villa. In terms of architectural design, it is the best surviving example of Fatio's formal designs on Palm Beach.

The Graham-Eckes School was a college preparatory boarding school for grades 7-12 with aa peak enrollment at under 200 students. Founded in Daytona Beach in 1926 by Inez Graham and her half-sister Evelyn Eckes, the school moved to Palm Beach in 1941 until its closure in 1989. The school emphasized a focus on an Ivy League level education and proper customs and etiquette. The estate was designated May 22, 1980.