Check out this series of glass igloos. It's for viewing the Northern Lights in Finland:
Each igloo has thermal glass outside, and I suppose that means it doesn't fog up between the heated room and the subzero air outside. Inside there's a bed and a bathroom.
On the downside, during the five day excursion you can only stay in the igloos one night, the rest of the time you have to live in a log cabin and take husky rides and ice fish.
Of course, I could go in and refuse to come out. It looks like a womb and vagina, doesn't it? I'd be a breech birth and plant my feet against the walls of the entry way.