Grand Ducal Family held a garden party at Berg Castle Selasa, 27 Juni 2017 Celebrity, Fashion, Food, Gossip, Lifestyle, News, Style, Travel, World On June 27, 2017, Grand Duke Henri and Duchess Maria Teresa, Hereditary Grand Duke Guillaume and Hereditary Grand Duchess Stéphanie of Luxembourg hosted a garden party at Berg Castle (Schlass Bierg) in Luxembourg. Tweet Subscribe to receive free email updates: