Scott Outdoor Amphitheatre, Swarthmore College, PA. Designed by Thomas Sears and completed in 1942.
2ft high retaining walls are made from layers of local schist slabs and the randomly spaced trees are Liriodendron tulipifera (Tulip Tree) and Quercus alba (White Oak).
I love the idea of a ‘turf proscenium floor’ and it looks like a great place to learn. I can imagine this kind of space would conform to the theories of design laid out in ‘A Pattern Language’ by Christopher Alexander…
(Photo source: Swarthmore College - The Cultural Landscape Foundation)