5–7 October 2011, hosted by the Hamburg Metropolitan Region and held in the Behörde für Wirtschaft, Verkehr und Innovation.
The theme was Metropolitan regions Coping with Climate Change.
Plenary sessions included Keynote addresses on Adaptation to Climate Change, Offshore Wind and Green Infrastructure. Hamburg was, at the time, Green Capital of Europe. Further sessions included a presentation on outcomes of the EUCO2 80/50 project, a major METREX initiative to explore metropolitan greenhouse gas mitigation measures that was led by the Metropolregion Hamburg. Outcomes of the URMA (Urban and Rural relationships in Metropolitan Areas) project, also led by the Metropolregion Hamburg, were also presented.