Fort du Hâ Prison was originally built in 1846 within remains of the 15th century Chateau du Hâ. The prison was taken over by German forces soon after the June 1940 occupation of France and used to incarcerate political prisoners.
On 23 October 1941, 20 political prisoners were taken from Fort du Hâ to Camp de Souge and shot in retaliation for the killing of a German military advisor in Bordeaux. The prison continued to operate after the war and was finally closed in 1967 and demolished in 1969 to make way for the French National School for the Judiciary. All that remains of the old prison now are the two towers and parts of the wall from the 15th century chateau. A memorial plaque on the site is dedicated the memory of the deported internees and resistants of Gironde who died in the Nazi concentration camps 1940–1945.
References:The Château du Haut-Koenigsbourg is situated in a strategic area on a rocky spur overlooking the Upper Rhine Plain, it was used by successive powers from the Middle Ages until the Thirty Years' War when it was abandoned. From 1900 to 1908 it was rebuilt at the behest of the German kaiser Wilhelm II. Today it is a major tourist site, attracting more than 500,000 visitors a year.
The first records of a castle built by the Hohenstaufens date back to 1147. The fortress changed its name to Koenigsburg (royal castle) around 1157. The castle was handed over to the Tiersteins by the Habsburgs following its destruction in 1462. They rebuilt and enlarged it, installing a defensive system designed to withstand artillery fire.
The fortification work accomplished over the 15th century did not suffice to keep the Swedish artillery at bay during the Thirty Years War, and the defences were overrun.