Sorrisniva Igloo, Norway: This vast single-structure igloo in Finnmark is constructed each winter. Inside, you’ll find an ice bar, ice chapel, intricate ice sculptures (tables, chairs, fireplaces), plus bedrooms where the temperature is a steady -4C to -7C. Snowmobiling and husky safaris are offered during the twilit winter days, while a heated restaurant and sauna are close by when the cold gets too much.
Sorrisniva Igloo, Sorrisniva, Alta, Norway (00 47 784 33378; sorrisniva.no). Rates start at Nkr1,995 (£225) per person, including breakfast and transfers from Alta.