Sorrisniva Igloo Hotel
Alta, Norway
Rebuilt every winter beside the Alta River, well inside the Arctic Circle, from snow and river ice and nothing much else. The hotel exists from roughly January to April and then returns to the water it was cut from, which the owners describe without ceremony as the normal course of things.
Suites are carved fresh each season by invited sculptors, so the reliefs on the walls are a one-year design. Guests sleep on ice beds under reindeer hides in expedition-grade bags, at a steady temperature a few degrees below freezing.
There is a warm building alongside with beds, showers and a restaurant, and most visitors use both — one night in the ice, the rest in the heat. Alta is one of the more reliable places on the map for aurora.
In brief