Sigmaringen is a city in southern Germany, in the state of Baden-Württemberg, at the upper Danube, formerly Hohenzollern, capital of the Sigmaringen district.
It was first mentioned in 1077 and is particularly renowned for its wonderfully preserved Sigmaringen Castle (ger.: Schloss Sigmaringen).
On September 7, 1944, following the Allied invasion of France, Henri Philippe Pétain and members of the Vichy government cabinet fled to Germany and established a government in exile at Sigmaringen. Pétain returned to France in April 1945. French writers Céline and Lucien Rebatet, fearing for their lives because of their political and anti-Semitic writings, fled along with the Vichy government to Sigmaringen.