Pritzker Prize-winning architects Jacques Herzog and Pierre de Meuron and artist/activist Ai Weiwei explore the meaning of public space in our surveillance-laden world, referencing the story of Hansel and Gretel in which the children lose their way and feel a sense of menace in a space they know and trust. The artists take advantage of the vast openness of the Drill Hall, creating a 21st century public place in which the environment is disconcerting, the entrance is unexpected, and every movement is tracked and surveyed by drones and communicated to an unknown public.