Advice Two Weeks in Normandy, Poland & Prague

I'm planning a two-week trip to Normandy, Poland, and Prague, and I could really use some advice on how to make the most of it. Are there must-see spots in Normandy that I shouldn't miss? What about the best cities in Poland to visit—Warsaw, Krakow, or elsewhere? And in Prague, are there any hidden gems away from the usual tourist traps? Also, how should I approach transportation between these places? Any tips or itineraries you can share would be super helpful!