Incredible landscape, long day but while worth it!
As Mr. Matt Lauder helicoptered over Jungfrag as part of his "Where in the World" I immediately began to plan my trip. The Jungfrag summit located in the Swiss Alps holds Europe's highest travel station, the train cuts inside the mountain, now a 100 year old line. The beautiful scenery makes you regret the return. My recommendation if you can choose the season is to go in the summer - only because you can now enjoy "Winter Sports" aka you can slid down a mountain while looking at a glacier. If you are limited on time I recommend the Zurich trip but if you have time to spare I definitely recommend staying in the Valley below and connecting via Interlaken. It's absolutely breathtaking and I wish I would have stayed at least a week in the surrounding area.
Bus Station in Zurich: The bus station for the tour was a little hard to find but if I can suggest a Starbucks to Starbucks route. Find the Starbucks in front of the main train station in Zurich. With that Starbucks behind you walk into the station and cut directly through it - making no turns. As you exit make a left and follow the road to the next Starbucks. Across the street from that is the travel bus station. Almost New York like, no?
Enjoy your trip!