A rectangular structure is laid out on the floor of the Kunsthalle Arbon. Its shape recalls an archaeological excavation site, a labyrinth, or the floor plan of a house.
![f (G (sub)) = [SUB] ∞ SUB(u)](https://cdn.prod.website-files.com/5dff6cd5e65e06c3f8d4cc7b/5fa85098b73fbb30418eee36_11.jpg)
