Heldenorgel at Kufstein Castle

See de.wikipedia.org/wiki/Heldenorgel (in German). The 'Heroes Organ' is the largest open air organ in the world and is located at Kufstein Castle in Austria. Over 4300 pipes (46 ranks) are located in the large round turret at the top of this picture complete with swell box type shutters. The organist plays the instrument from the 4 manual console which is housed in the building in the foreground. Daily organ recitals sound out across the town. Very impressive!