Dijon

Hermione and her parents went on holiday to France in summer 1993 (PA1), a trip which apparently included a stop in Dijon. Two years later, when Hagrid and Madame Maxime were travelling to see giants, they went through Dijon pretending they were going to Beauxbatons, but there they slipped away from the wizards who were following them and continued into the mountains instead (OP20). Dijon is likely near Beauxbatons, then, which makes sense since it is on the southern coast of France.