The International Architecture Biennale Rotterdam (IABR) 2009 in collaboration with Ikatan Arsitek Indonesia (Indonesian Institute of Architects Jakarta Chapter) is pleased to announce an idea competition on the theme of ‘Gotong Royong City’ in the context of the extended metropolitan region of Jakarta. Three winning entries will be selected by an international jury for exhibition in the IABR 2009 and awarded prizes totaling 7,000 euros.