Cairngorms

The Cairngorms is the UK's largest national park and the closest thing Scotland has to genuine subarctic terrain. The central plateau sits above 1,000m and stays under snow well into May most years — in some corries, snowfields persist year-round. Four of the five highest Munros in Britain are here: Ben Macdui, Braeriach, Cairn Toul and Sgor an Lochain Uaine (the Angel's Peak) — only Ben Nevis is higher. This is not a place you wander into casually.

What makes the Cairngorms distinctive isn't just the altitude — it's the combination of scale and accessibility. You can park at Cairn Gorm ski centre and ride the funicular to its top station at 1,097m — though outside the snowsports season it runs as a closed system, and walking out from the top is allowed only under the operator's controlled Summit Access Trial — or walk up from the car park. Or you can spend a week crossing the full plateau from Aviemore to Braemar via the Lairig Ghru without seeing a road. Both experiences exist here. The sheer area of the park — 4,528 sq km — means that even in August, you can find genuine remoteness ten kilometres from a car park.

The Strathspey villages of Aviemore, Kingussie, and Grantown-on-Spey are the main bases. Aviemore in particular has everything: decent food, gear shops, the main ski centre, and a direct rail connection to Edinburgh and Inverness. Braemar on the Aberdeenshire side is smaller and quieter. Between them, you have access to the entire plateau and to the river valleys — the Dee, the Spey, and the Avon — that cut through the range.