A unique experience to view the Aurora Borealis. In the wintertime, the Hotel Kakslauttanen in northern Finland offers lodging in glass igloos. Made out of a special thermal glass that doesn’t frost over even with variations in the outside and inside temperatures, you’ll stay relatively toasty inside and enjoy laying in bed viewing the beautiful night sky and Northern Lights (late August to late April) through your glass ceiling. Bundle up (yes, it can get to below -30°C!) and take advantage of their winter activities like husky or reindeer safaris, ice-fishing, snowmobiling, and cross country skiing.