width=device-width, initial-scale=1, shrink-to-fit=no" name="viewport"/>Late car magnate’s riverfront penthouse sells for $5.825 million. Perched on the top floor of the Arcadia building at 601/57B Newstead Terrace, the three-bedroom home has uninterrupted views from the Brisbane River to Hamilton Hill, a wraparound veranda and a spa-inspired en suite featuring a double sauna shower.