Its former use as a post office is commemorated by a statue of Hermes, which now stands at one corner of the building - at first floor level: the messenger of the Olympian gods is depicted with a mail bag hung around his neck, a post horn and several parcels to be delivered.
The Alte Post (old post office) also played a major role at the end of the Second World War: Hitler's successor, Grand Admiral Karl Dönitz, used a naval outside broadcast van parked in the courtyard of today's Alte Post for transmitting his propaganda announcements over the station Reichssender Flensburg. While the news was read and records played in the van, a refreshment room for female postal workers was converted into a temporary studio for addresses by Dönitz and his cabinet colleagues.
(source: Gerhard Paul/Broder Schwensen “Mai '45/Kriegsende in Flensburg”)