A billionaire lived on 6 continents. When he made his fortune, he chose 2 places to call home.

David von Rosen, who spends part of his year in Dubai, made his fortune through Lottoland. Courtesy of David von Rosen David von Rosen, a German billionaire who founded Lottoland, has lived on six continents. After living in locations including the US, South Africa, and Australia, he chose two places to call home. Von Rosen now lives between Switzerland and the UAE, a combo he calls "unbeatable." This as-told-to essay is based on a conversation with David von Rosen, 50, the founder of the o...