The Harderkulm is the finest viewpoint in the Interlaken area, reached by the Harderbahn funicular from a station five minutes' walk east of Interlaken Ost. The journey takes twelve minutes and gains nearly 700 metres of altitude — at the top, a cantilevered viewing platform juts out over the valley. The panorama takes in Interlaken directly below, both lakes, and the full Eiger-Mönch-Jungfrau massif in a single sweep. On clear days the view extends across half the Bernese Alps.
The restaurant at the summit is expensive but the terrace is open to non-diners if you just want the view. An easy trail loops around the hillside and connects to longer paths towards the Augstmatthorn for those who want to make a proper hike of it. The funicular runs from April to November; check schedules as they vary by season.