It is difficult not to be charmed by the desert citadel, that is Jaisalmer. This is the last outpost on the western border of Rajasthan. Visit its fabulous Fort, see the Havelis in the old town, spend a night in the Thar Desert.
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.