When we first started talking about honeymoon ideas, I remembered reading about the Ice Hotel awhile back. This is at the top of our list of places so far. Where else can you stay the night in -5 °C to -8 °C and take a dogsled from the airport? Plus there is an Absolut Icebar and I still think the coolest part is that it's re-built from ice every year, so it changes year to year. I'm pretty sure I'll freeze my hiney off, but I think seeing the Northern Lights would definitely be worth it. I hope it works out!