We are arriving in Zurich on Dec. 15, 2011. We plan to make it to Paris by December 22 or 23. That gives us about a week. We don't necessarily plan on staying in Zurich, but plan to move on immediately. We are considering all options!
Maybe: traveling by train along the France/German border, Black Forest area, then over to Paris. Any must-see stops? We'll consider staying in one town (like Frieburg or Strasbourg) and taking day trips from there.
Maybe: If there's not much to be done along the border, we are thinking we might fly to either Berlin or Prague for a couple of days. Basically, we're willing to take short train trips or flight (2 hours or less) to any given town/city. Any suggestions?