If you have ever thought of going to Interlaken, go. It is beautiful, clean, of course it is expensive. But so worth it.
Known as a mecca for backpackers (No Swiss go there, according to my friend Marco), it is known for adventure sports. I went hanggliding and it is one of the highlights of my trip. Looking down, flying like a bird, it was just beautiful. My mouth was wide open nearly the entire time. I highly recommend it.
I was not planning on doing an adventure sport, it just happened. But I am ready to go again.