Metz, Lorraine, France
The north-eastern French region of Lorraine is the only one that borders three countries (Belgium, Luxembourg, and Germany) and that has two cities of equal importance (Metz and Nancy). Despite what some people told me, Metz is a very beautiful city, and the cathedral in particular is spectacular. Note that the links on this page will lead to French descriptions, but if you scroll down you can read the English translation: Metz, Lorraine, France