Long considered the most glamorous city in Europe, Paris has a little of everything. For the romantic, one can visit the haunts of famous writers, historical sites of just about every nature and the Moulin Rouge.
On the other hand, art lovers can spend weeks visiting the 100 plus museums in the city with, of course, the Louvre being the crown jewel. Personally, I found the Rodin Museum just as interesting, particularly since there was a much smaller crowd.
Perhaps the best way to experience Paris is just to wander around. Yes, take a few days to visit the notable tourist trapserr, destinations. Once you get tired of standing in crowds, walk out of your hotel and just keep on going. You will find little neighborhoods with eccentric characteristics to make you smile. As you plod along, real cafes and gathering places will become apparent. Make sure you visit them as the locals in these neighborhoods are very friendly and funny.
Nice
Nice is a small beach city just to the east of Cannes in the south of France. It is an odd mix of old world charm and beach culture. In and of itself, there is nothing particular about Nice when compared to Cannes with the exception of the prices. They are significantly cheaper and you get pretty much the same thing.