We are just finalizing a one-month house exchange in Angers in September. I have done extensive research about the Loire Valley but I don’t know too much about the area east of Angers. Nantes is about an hour away and Rennes about an hour, 45 minutes. I already have Mont Saint Michel, Dinan, and the Carnac area on my list of really like to see. (These are about on the limit for a day trip.) We are interested in the history and culture. What else would you suggest as a must see in this area?