Snake Entryway Steel, cast bronze 6’ x 3’ Penthouse entryway door uses door motion to activate three kinetic bronze leaves. Private residence, Chicago, IL. Snake Entryway (Detail) Steel, cast bronze 6’ x 3’ Penthouse entryway door uses door motion to activate three kinetic bronze leaves. Private residence, Chicago, IL. Slide 1 Slide 1 (current slide) Slide 2 Slide 2 (current slide)