HOW TO DO IT

Interlaken, the regional hub, is two hours by train from Zurich Airport. Alternatively, TGVs run from Paris to major Swiss cities in three to four hours. eurostar.com sbb.ch

Jungfrau Railways threeday ‘Top of Europe Pass’ offers unlimited travel on all mountain transport from £202. Hotel Eiger has double rooms from CHF289 (£235), B&B. hoteleiger.com

Hotel Glacier has double rooms from CHF319 (£260), B&B. hotel-glacier.ch