Green wall

A glass wall wraps all the way around OneState, separating the city from the wilderness outside. The wall represents the citizens' alienation from their irrational selves. Just as it physically separates D-503 from the wild, the government spiritually separates him from his own emotions, desires, and imagination. Both divisions are artificial. The separation runs so deep that D-503 is astonished when he encounters the natural world beyond the wall; fascinated by the grass beneath his feet. Likewise, D-503 fails to recognize his irrational desires, projecting them onto another persona.