TEDxHHL 2015 will be held in the Halle A of "Werk 2 - Kulturfrabrik Leipzig e.V.". The "Werk 2" is one of the leading event venues in the typical Leipzig industrial style. It has the perfect flair for a TEDx event and a cosy and cool get together afterwards.
Sources: "Werk 2 - Kulturfabrik Leipzig e.V." & Deutschland-Locations.info