General view of the harbour of Hamburg with construction site of the Philharmonic Hall and Harbour City, September 23, 2012. Berlin, which staged the Games in 1936, and Hamburg are battling for the green light from the German sports authorities to launch a bid for the 2024 or 2028 summer Olympics. The German Olympic Sports Confederation (DOSB) on March 10 presents the findings of polls taken in Berlin and Hamburg which of the two cities is more favourable to host the 2024 Games, provided Germany is the winner. The DOSB will announce their preference on March 16. Picture taken September 23, 2012. REUTERS/Fabian Bimmer (GERMANY - Tags: OLYMPICS SPORT)