The only tattoo place in the Stockholm area I have personal experience with is Tumba Tattoo where I got mine. I can recommend them. I'm sure there are many other good ones in Stockholm though. EDIT: Before anyone asks: No. It's not an Opeth tattoo, although I do plan on getting the O at some point (not quite sure where I'd want it yet though). The tattoo is of Mjölner (the hammer of the Norse god Thor), based on a pendant from the bronze age. He managed to make it quite detailed. Even the small imperfections from the original are there.