I don’t know why, but when I see an auditorium, specifically a tiered one, I’m reminded of onions — a central core (pit / bulb) enveloped by layer after layer of stuff (seats / flesh.) Call me crazy, but once you see the similarities, you can’t deny it either! 🙂
I clicked this open-air auditorium while at Montjuic, Spain. I loved the patterns created by the curves of the tiered seating and the zigzag lines of the stairs.