The Charles M. Schwab House was a 75-room mansion on Riverside Drive, between 73rd and 74th Streets, on the Upper West Side of Manhattan in New York City. It was constructed for steel magnate Charles M. Schwab. The home was considered to be the classic example of a "white elephant", as it was built on the "wrong" side of Central Park a…The Charles M. Schwab House was a 75-room mansion on Riverside Drive, between 73rd and 74th Streets, on the Upper West Side of Manhattan in New York City. It was constructed for steel magnate Charles M. Schwab. The home was considered to be the classic example of a "white elephant", as it was built on the "wrong" side of Central Park away from the more fashionable Upper East Side.