Berlin attractions are a good mix of history, culture and art. Here is a detailed 4-day Berlin itinerary to explore this city for families with kids.
Zagreb is nothing like the medieval towns of Split and Dubrovnik, and yet, warrants a day or two. There is interesting architecture, small museums, good restaurants and beautiful parks to be enjoyed.
Ljubljana is one of the cutest European cities I have visited. We spent only one day in Ljubljana experiencing a Slovenian cuisine food tour, and fell in love with the city.