"Grüne Zitadelle" - Green Citadel Magdeburg. Germany. built in 2005 in the style of Hundertwasser by Peter Pelikan (design) & Heinz M. Springmann. Astrogeographic position: air sign Libra sign of harmony, balance, beauty, decoration, naive painting, openness, stages with creative, innovative, spiritual air sign Aquarius sign of the sky, heaven, paradise, self-finding, liberation, holistic & alternative technologies. FL 3.