We stayed five days in Paris and while we were walking on the night through the square of Notre-Dame we met a nice pair from San Francisco (California). They were very kind and took a photo which you can see here below.
The weather was beautiful and sunny. Visiting the Louvre Museum takes on overage 1 day! I suggest you should buy tickets the day before. After we had visited Notre-Dame, which is the symbol of medieval Paris, we walked up 400 steps to the top of the South tower of the Cathedral. 46 metres above the ground and from there we saw the whole of Paris and a lovely view over the river Seine and its bridges.
During the last two days we went to the left bank of the river Seine where we visited the oldest houses in the latin distict and Saint Germain de pres. There is a very useful river boat shuttle service along the Seine.
Unfortunately, after we had come back from Paris I and my wife didn't find a part of the luggage. The biggest of our three suitcases wasn't in the Rome airport. We were really disappointed with this and "Air France customers assistance" here in Rome said that they will send us the luggage as soon as it arrives from Paris.
Tomorrow we are going to Gaeta, in South Italy.
Have a nice summer!