Privacy at home may seem natural, but it is a relatively recent construction. For centuries, houses were shared spaces, with no clear divisions or sense of intimacy. This episode traces the chain of changes that transformed the home into a private space—from the emergence of separate rooms and corridors to the development of locks, running water, and new social customs. As these innovations connect, they redefine daily life, relationships, and the very idea of the personal. A story where architecture and culture come together to create something we now take for granted.