Whether because of his passion for art or his real estate activities, Thierry Barbier-Mueller was a key figure in Geneva life. Father of five children, the collector and promoter died on Tuesday following a cardiac arrest. The approximately 200 employees of the real estate group SPG-Rytz (Société Privée de Gérance-Rytz) which he had managed since 2000 were informed by his two daughters, Marie and Valentine. They praised “his overflowing energy, his state of continuous movement, his multifaceted creativity and his abundant ideas”.