The roofs of the museum buildings have all been designed to call to mind the crown of a well-developed tree. The bronze they are made of has weathered to a dark green color that blends in nicely with the surrounding mountains.
而園區內的館舍，屋頂設計趨向於樹頂的弧線造型，使用的材料為青銅，隨著時間的氧化，自然褪變成與四周山色相容的墨綠色。