This glacierfield is the largest one in the European Alps and quite impressive. You can take a special train up to the Jungfrau and you have to change trains twice and you climb up the mountain higher and higher over the course of 3 hours. The last part of the train trip is actually through the mountain and then you end up at the highest railway station of Europe at 3454 meters high; the Jungfraujoch. Since you climb up so fast most people will have a little bit of altitude sickness. At the station you can go outside to see the glacier and shoot some pictures of the view and there are ice caves that are cut out of the glacier.

The whole thing is quite touristy and pretty expensive, but if you have never been high up on the mountains and never seen glaciers before it might be worth it.