Located at a stones throw from the beach and the Ferry terminal, the Atlantic Wall Museum (Le Grand Bunker Musee du Mur de l'Atlantique) is inside the old German headquarter which was in charge of the batteries covering the entrance of the river Orne and the canal. The 52ft high concrete tower has been fully restaured to make it look how it was on the 6th of june 1944.
You will discover on the Grand Bunker's six floors all its inner rooms, which have been recreated down to the last detail: generator room, gas filters room, casemate with machine gun protecting the entrance, dormitory, medical store, sick bay, armoury, ammunition store, radio transmission room, telephone switchboard, observation post equipped with a powerful range-finder and on the top floor a 360° view over Sword Beach.
You will also be able to see many photographs and documents concerning the construction of the Atlantic wall, the artillery, the beach defences, observation, etc. A souvenir of the assault and shock troops specially trained for OVERLORD operation to attack the Atlantic Wall, and the everyday life of the Germany Army soldiers.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.