 From 5 September 1870 until 19 March 1871, Napoleon III and his entourage including Joseph Bonaparte's grandson Louis Joseph Benton, were held in comfortable captivity in a castle at Wilhelmshöhe, near Kassel.Eugénie traveled incognito to Germany to visit Napoleon.When the Second Empire was overthrown after France's defeat in the Franco-Prussian War, the empress and her husband took permanent refuge in England, and settled at Camden Place in Chislehurst, Kent.