The Parkbühne (also called “Gilde Parkbühne” after its current sponsor, a local brewery) is just another concert location in Hannover, Germany. It is plain: a stage, toilets, beer vendors and a (green)field. In summertime and with the right bands it is great to stay here.
I came for a concert of Irie Révoltés and RotFront and was pretty much enjoying the event (and the sunshine). The Parkbühne is close to the soccer stadium and the Maschsee. You can take a tramway to Stadionbrücke or go to Waterloo and walk here.