I had an opportunity to spend a weekend in Switzerland this summer (2013) and a friend suggested I go to Interlaken and try the Via Feratta. I'm so happy I did. We went early in the morning and only saw one other person on the trail. The towns were completely empty at 9am. It was an amazing hike with great views and a lot of fun exposure. I would recommend it to anyone who is in the area.
For many years I have wanted to try the Via Ferrata. It's my luck that my first one was more on the easy side. But the exposure was still magnificent in some spots and with bridges and ladders and cable crossings it was a wonderful experience. Thanks Mark for the write-up!