On the occasion of the North Business Conference 2009 the German Chancellor Dr. Angela Merkel signed the ACO Golden Book. Ideas for growth and employment – this topic attracted around 1,500 personalities from business and public life to the ACO Academy in Büdelsdorf. Before presenting her speech, the German Chancellor planted a 50 year old oak in the Sculpture Park on the NordArt grounds. The tree was sponsored by Günther Fielmann. Angela Merkel also referred to the company initiative "Kunst in der Carlshütte" in her speech. In 2008, the ACO Group had already won an award from the German President for this cultural initiative. Nowadays, visitors of the NordArt Sculpture Park can still view the oak during the opening season each summer.