adventure holidays croatia

My European adventure. Any advice?
Hello I'm going to Europe in spring 2010 for 80 days. We're going to 1.England 2.Scotland 3.Denmark 4.Germany 5. Austria 6. Switzerland 7.France 8.Spain 9.Croatia 10.Italy 11. and Greece. So I was wondering if anyone had any advice on places to go and what to avoid in these countries. Things we have to see which ads. The temperature in spring in these countries. Also on holiday (activities, etc.) was appropriate and fun for girls 2 15/16 years old and 2 adults. Thanks:)
Wow, nice adventure: P In Croatia, during the spring temperature is 20-25 degrees Celsius (65-75 degrees Fahrenheit). I recommend visiting Dubrovnik, you should take a walk through the walls there, Split and Zadar are also good places to visit, just walk around the nuclei of the old city and see everything, cities are not very large. Sorry, I can not think of any traditional festivals in the spring, Croatia is a bit more fun for summer.
Mountain Biking in Montenegro