The hook
The largest glacier in the Alps, a twenty-kilometre river of ice curving between peaks, viewed from ridge-top villages reached only by cable car, and visibly retreating year by year.
01Why it's worth it
The Great Aletsch is the biggest glacier in the Alps, a vast, slow-moving stream of ice fed from the high snows around the Jungfrau, banded with dark medial moraines that trace its flow like grain in wood. You reach it from the car-free villages of Bettmeralp and Riederalp, riding a cable car up to viewpoint ridges where the whole frozen sweep opens below you. Trails run along its flank, and the scale is hard to take in from a photo; it simply keeps going. It is also one of the clearest places to see the climate changing, because the glacier is shrinking fast and the exposed rock and old markers show how far it has pulled back within living memory. That combination, sublime and sobering at once, is the visit.
02How to experience it
Take the cable car up from Bettmeralp or Riederalp to a viewpoint like the Bettmerhorn or Eggishorn, then walk a stretch of the ridge trail above the ice rather than only looking from the top station. Go on a clear morning. Reading the retreat markers turns the view into something more than scenery.
From the locals
The Bernese Oberland's walking gets its best summary in a single r/solotravel comment, and it is worth following literally: "the Interlaken region, especially Lauterbrunnen, Mürren, Grindelwald and Kandersteg, are well connected by train, bus and cable car. We found the public transit to be excellent, and almost every single train arrived exactly on time. My favourite hikes were Oeschinensee, the North Face trail in Mürren, and Trümmelbach Falls."
Two of those three are worth separating out. Oeschinensee, above Kandersteg, is a turquoise lake in a cirque of walls — the least-crowded of the region's famous views. And Trümmelbach is not a walk at all but a lift and galleries cut inside the mountain beside ten glacial waterfalls, which is the closest most visitors get to standing inside the meltwater system this glacier feeds.