This document discusses the concepts of personal space and territoriality. It defines personal space as the invisible boundaries surrounding a person's body that others should not intrude upon. The document outlines Edward Hall's zones of personal space, including intimate, personal, social, and public zones. It also discusses factors that affect personal space, such as gender, age, personality, and culture. Finally, it explores how architecture can impact personal space through spatial planning, proximity, scale, lighting, and other design elements.