Grand Duke Henri, Grand Duchess Maria Teresa, Hereditary Grand Duke Guillaume and Hereditary Grand Duchess Stephanie of Luxembourg visited the exhibition "Viv (r) e la Matiere" held in connection with the 3rd biennale "De Mains De Maitres (Hands of Masters)". The exhibition is being held at the Arbed building (19 Liberte). Guillaume and Stephanie had attended the opening of the exhibition last week.