Kehl is a small, picturesque city in Germany just across the Rhine River from Strasbourg. Established in the Middle Ages, Kehl was taken over by the French in the late 17th century for defensive reasons; they built a fortress there, designed by the architect Vauban. On May 7, 1770, Marie Antoinette was officially handed over by Austria to France on an island in the Rhine near Kehl. In 1915, the city was returned to Baden, and the fortress was dismantled at that time. During the 20th century Kehl changed hands between the French and the Germans several times; it was finally returned to the Federal Republic of Germany in 1953.