an der Ruhr. In Duisburg, the centre of his business activities, he made donations to the tennis club, the carnival and the zoo. The Helmut Horten Stiftung promotes medical research. His widow inherited his $1 billion fortune and lived between homes in Croglio, Lyford Cay, by the Wörthersee in Austria and a penthouse in Vienna. Rated within the world's 500 richest people by Forbes, she also commissioned and owned one of the world's largest yachts, the Carinthia VII. References Josef Niesen: Bonner Personenlexikon. Bonn: Bouvier, 2007, . External links Helmut Horten Stiftung 1909 births 1987 deaths Nazis Businesspeople from Bonn People from the Rhine Province German businesspeople in retailing 20th-century German businesspeople German company founders