3D Proud Johanna - Version 1.8 First choice quality 3D screen saver!Brillant in colours and sound. Ideal for relaxing! One of the most famous windmills in Germany! The windmill Proud Johanna by turns of day and night. An idylle with grazing cows, trees with leaves that move in the wind and changing camerapositions. The model of the windmill is based on the real Johanna wich is situated in Wilhelmsburg a part of the city of Hamburg (Germany).