My fairy houses start as a small scrap of wood, sometimes they get HUGE, sometimes they stay small. It all depends on what speaks to me while I'm building them. I also have a few that are made with gourds. Fairy houses have gained popularity recently, and mine are no exception, they have been popular for that extra special collector. Although they can be outside, weather will of course, alter their look... which might not be a bad thing! I envisioned a porch setting, pergola or lanai setting or even an entrance way. It's probably best to insure they are inside in the winter, as extreme temperature changes are not ideal.