Murren biking sounds other worldly! The water powered mill is phenomenal to see. The lift and the gandola - also very interesting. Also, the cheese farm is very interesting if it can be seen. Food will be, I suspect, a serious problem. But I am sure even that has been addressed by people. Traditional music - interesting but may not be so for all, and I am not sure if every one will enjoy it.
Interlaken not too bad to see again. Esp. with some history background.
Military installations underground. Interesting. 15k buildings with hidden guns - wow.
Jungfraujoch train - yellow one. He is on the first train. Kliene Sheidig - rail junction at the base of the peak.
The train tunnels through the mountain. They dug it 100 years ago. 11k feet - the train takes you. Need a jacket for visiting this place. We have been here I suppose. Go to the hut up above?
From the video in this link - The Best of the Alps: Switzerland’s Jungfrau Region – Rick Steves’ Europe TV Show Episode - Link
The Youtube link to the video - Switzerland's Jungfrau Region: Best of the Alps - YouTube - Link