"On the grounds of Houston’s Rice University lies the otherworldly Twilight Epiphany, one of Turrell’s largest skyspaces in the world—it can seat up to 120 people on two levels. Just before sunrise and sunset an LED-light sequence is projected onto the pyramid pavilion’s 72-foot square roof and aperture in the ceiling, creating a light show that plays with the changing colors of the sky during dawn and twilight."