Christania definitely maybe

One area to avoid - or to visit - depending on your opinions of things, is Christania. Christania was taken over by squatters and is the only place you can purchase items completely tax free. All prices are negotiable on everything while in Christania. There are a wide variety of bars which tend to open at around 10 pm and stay open till about 5 am. Some bars seem pretty lax about age limit, while others have a 300 lb guard watching the door turning away everyone who isn't 25. There didn't seem to be a real personal safety issue there, but still it would be advisable to be wary while in and near Christania.