There are so many beautiful cities in Europe, its hard to choose the best one, they are all unique with its own culture. There are the obvious ones like Rome, Barcelona, Paris... but my pick is Prague, Stockholm and Vienna, these you should definitely visit.
Well I suppose Italy would be a great choice for u.There are unique style of architectures,lovely girls and guys.Beautiful scenery and cuisine also included. What's more,Venice impressed me very much when i was here.The whole city around by clear water,and i just sitting on the gondola,viewing the buildings and landscapes along the riverway,It's absolutely fantastic!!Trust me~~