Denmark's Crown Princess Mary and Crown Prince Frederick ride stationary bicycles to generate power for...
Denmark's Crown Princess Mary and Crown Prince Frederik ride stationary bicycles to generate power for making drinks at the exhibition "Curating Cities: Sydney-Copenhagen at Customs House in Sydney November 20, 2011. Princess Mary and Prince Frederik are in Australia for an eight-day official visit. REUTERS/Daniel Munoz (AUSTRALIA - Tags: POLITICS ROYALS ENTERTAINMENT)