They're a first impression and seek to make an impression - the foyers of Germany's biggest companies. They reflect how the companies see themselves - powerful,secretive,prestigious or transparent. This time we will be visiting the Allianz Group. Germany's biggest insurer has its headquarters in the Bavarian state capital of Munich.The entrance hall at Allianz was built in the 1950s and inauguraterd by then-chancellor Konrad Adenauer. Today the construction based on a Roman atrium is a listed building. Hagen Tober took a tour led by Barbara Eggenkämper,director of Allianz's corporate archive.