Tromso, verdict by verdict

Tromso is the capital of the Arctic night: a compact, walkable city three hundred and fifty kilometres north of the Arctic Circle where the northern lights, the polar night and the midnight sun are the actual product. The centre is one main street plus a harbour, with the Fjellheisen cable car and the Arctic Cathedral as the two landmark sights.

The real caveats: everything is expensive even by Norwegian standards, the lights are weather-dependent so no tour can promise a sighting and cloud cover defeats every tour some weeks, and polar-night trips mean only a few hours of blue twilight. The centre is a few streets and the museums are modest, so anyone expecting a big city should recalibrate.

The reward is that nowhere else in Europe pairs this much Arctic activity, whales, sleds and Sami culture, with real city infrastructure. Three nights is the working minimum for one aurora chase plus one day activity and the cable car and cathedral, a fourth night hedges weather cancellations, and tours all pick up centrally in a centre you can cross on foot in twenty minutes. Late September to March is aurora season with November to January adding whales but the shortest days, February and March balance snow, light and lights, and the midnight sun runs late May to mid July for hikers.