Queen Máxima and Princess Beatrix attended 15th anniversary of Prince Claus Chair Kamis, 12 April 2018 Celebrity, Fashion, Food, Gossip, Lifestyle, News, Style, Travel, World April 12, 2018 is 15th anniversary of "Prince Claus Chair". On the occasion of that anniversary, a celebration event was held at Noordeinde Palace today. Dutch Princess Beatrix also attended the event and Queen Maxima gave an opening speech. Tweet Subscribe to receive free email updates: