Deutsche Messe Hannover, Germany

466,100 square meters of covered indoor space, 58,000 square meters of open-air space, 26 halls and pavilions: that will give you an idea of just how big the home base of Deutsche Messe is - it's the biggest Exhibition Center in the world. Apart from the distinct architecture of the Exhibition Center's halls, it boasts a number of other features, including the Convention Center with its 35 function rooms, glassed-in areas between halls, grassy park-like areas and "chill-out" zones, to guarantee a relaxed yet productive atmosphere.