It absolutely is easier to travel together with another adult people – then, it doesn’t really matter if these adults are members of your family of friends. The most relevant thing is that they would most presumably have similar interests and would be up to doing similar activities while on the trip abroad. You can be sure that in any European city you would manage to find something nice to do for you and your companion. Nevertheless, the real challenge may be travelling with children. They most probably will not want to visit too many museum and churches. You obviously need to pick up attractions for them more carefully. And this article may be helpful – it shows 2 European cities, which might be perfect to visit with your kid.