Switzerland has always been on my list of places to travel too.  Switzerland is more of a Winter Wonderland, so if you aren't a fan of the cold, then this isn't the place for you.  The Swiss Alps are the place to be within this tundra.  Skiing and sledding and even making snow angels at this popular slope in the land.  Mount Pilatus is a five star resort by the Alps that is on the edge of an icy cliff.  So dangerous, yet breathtaking as you look over the edge into the winter abyss below.  I doubt you would be able to find much to do that includes warm weather, but hiking Mount Rigi is one.  This mountain is one of the only not covered in ice caps and is great to go exploring in.  Switzerland is made for big fur coats and big snow boots, but I bet it would definitely be worth it.