The 2015 Bi-City Biennale of Urbanism Architecture (UABB) has launched an open call for exhibitors. Co-organized by Shenzhen and Hong Kong, UABB is the only biennial exhibition in the world that is based exclusively on the themes of urbanism and urbanization. This year's edition, which will run from December 2015 to February 2016, will be based around the themes "Re-Living the City" and "Visions 2050 - Lifestyle & The City." All those who are interested in participating as an exhibitor should submit their proposals to the organizers of the Shenzhen curatorial team (here) and Hong Kong curatorial team (here) before June 30, 2015. See our past coverage on the 2013 UABB to learn more about the event.