My last festival of this Summer was Wacken. I go to Wacken every year since 2009. The biggest heavy metal festival in the world is my personal highlight, it's my second home I'd say. The ambiance is peaceful even if you see thousands of people dressed in black. The music is great - Arch Enemy, Amon Amarth, Steel Panther, Skid Row, Children of Bodom, Apocalyptica were the bands I enjoyed the most playing on stage.
But it's not only about music, the whole structure, organization of the festival is awesome. You have this huge Wackinger Village - the medieval part of Wacken. The decoration here is conceived into the smallest details. You feel like entering the Middle Ages. You can play old school games like tug-of-wars or shoot with bow and arrows, dance, fight, smoke shisha, drink mint tea or enjoy Wacken blood with an XXL spit. I spend a lot of time here.
I've never seen a bigger food variety in one place - from standard food like Pizza or noodles to fish & chips, garlic bread, vegan plates, pork roast, duck, etc - you find everything ! Instead of a bar, there are big wooden ships where you can order Mead (Met, honey wine) or Wacken Blood (berry wine). The camping place is great because your car is standing in front of your tent so you don't need to walk for ages when arriving with your whole stuff on the back. Well everything is awesome here, Wacken makes a great job to satisfy over 80.000 metal heads.