Fourty minutes away from Lyon, you can get to the middle-age city of Perouges, famous for a variety of reasons. Its inhabitants resisted an attack from the Dolphins (from the region of Dauphine, which is the area of Grenoble), and managed to save nearly all their goods, apart from the door at the entry of the city. If you feel like trying the local speciality, ask, in any bakery for a sugar pie. However, if you feel like making the same one at home, be aware that as any well-protected secret, you can not easily know the recipe...