![Marcus Maeder and Roman Zweifel show the 'trees' installation to French President François Hollande and President of the Swiss Confederation, Simonetta Sommaruga, accompanied by Najat Vallaud-Belkacem, Minister of Education, Higher Education and Research, Corinne Mauch, Mayor of the City of Zurich and Thomas D. Meier, President of the Zurich University of the Arts.](https://blog.zhdk.ch/trees/files/2015/04/visite_hollande_sommaruga.jpg)
Marcus Maeder and Roman Zweifel show the ‚trees‘ installation to French President François Hollande and President of the Swiss Confederation, Simonetta Sommaruga, accompanied by Najat Vallaud-Belkacem, Minister of Education, Higher Education and Research, Corinne Mauch, Mayor of the City of Zurich and Thomas D. Meier, President of the Zurich University of the Arts.