If you're exploring the Alps or wandering through a historic old town and clouds suddenly roll in or drizzle hits your sunglasses, don’t panic (or cancel your plans). A little rain never stopped the Swiss… and it shouldn’t stop you either.

Whether you're taking the scenic train to Jungfraujoch, the rotating cable car up to Titlis, or enjoying the breathtaking views from Gornergrat near Zermatt, the mountains are truly awe-inspiring. But as the altitude increases, so does the chance of experiencing altitude sickness, even on a short visit. Here's what every day-tripper should know before heading up.