Why does the duchy of Brittany begin in Nantes? That’s a good question and the best way to find out is to go there!  Here is everything you need to know to make the most of your visit to the castle; Chateau Des Ducs De Bretagne This is where you will the city’s history museum!  It has 2 tours you can take to cover 7 time periods.  If you want to do both tours plan at least 2-3 hours for each and try to do the tour on different days!  After climbing stairs and wandering from room to room, you will need a refreshment! One tour is focused on Nantes medieval history, and explains…