Stream Wacken Online Free – Watch Full Movie from Home at 123Movies. . Wacken Open Air is the biggest 3-day-rock- and metal-festival in the world. It's three days of raw energy, non-stop Heavy Metal music at full blast and 80.000 fans on a party frenzy. A true legend, taking place annually since 1990 in the sleepy German country town of Wacken, it attracts fans from all over the world.