Heading to France in early October for 11 days.
Our must-dos in Paris are the Louvre, Catacombs, Notre-Dame, and attending a concert. Plus plenty of time to explore and simply enjoy being in the city, hit up other museums or attractions as we feel like it (and as their availability allows). So far we've settled on six days in Paris, one day in Versailles, and one day in the Loire Valley.
That leaves us with an additional 3 days, and we're strongly considering additional trips outside of Paris. Our top contenders are Strasbourg / Colmar, Luxembourg, and Saint-Malo / Mont Saint Michel. We're equally interested in each, though if doing MSM, would prefer to be there before and/or after the crowds.
Theoretically we could try to do each as a day trip, but that would be a lot. (And would be crowd-tastic for MSM.) Most relaxed would of course be three days in one place. But what we're leaning towards splitting the difference, and hitting two places--a bit more rushed to see a bit more.
Thoughts on how to spend those three days? We're really torn!