Trees in the Neue Nationalgalerie Berlin? The installation Sticks and Stones by David Chipperfield (1953) fills the upper hall of the Neue National with stripped down tree trunks. The refer to the radically new design by the famous architect Ludwig Mies van der Rohe (1886-1969).
The trees by Chipperfield, who is also an architect, symbolically support the weight of the ceiling as well. They refer to the upcoming renovation of the building, executed by (the same) Chipperfield. The stripped down tree trunks point to this inherent closure for approximately two years. So visit it now whiles you still can!