I'll be visiting my girlfriend who's staying in Helsinki, Finland until the end of december, and I'd like to surprise her by taking her on some kind of trip or event or something. However, last time I was there we have already seen the most popular places in Helsinki. So I was wondering, is there anyone here from Finland (or not from Finland) who knows some cool things to do in/around Helsinki? I've been thinking about renting a small cabin, but I'd actually like to get some more inspiration if I can :).