Last september I went to Paris and I had a blast exploring the museums there- and even walking around the city felt like being in a huge museum. It was awesome! I loved the cluny, the louvre, the marmottan, the orsay, the rodin museum... and all of the beautiful sculptures in the TUilleries amazed me.
I just booked my airfare to Italy for this september- if anyone has advice about must see museums & sites etc let me know! I'm flying in to Rome. Me and a grilfriend are staying with her sister who lives on the border between Tuscany and Umbria, that will be our home base and we'll explore from there.