This lecture explores the modern concept of 'domestic' as a separate space from work, focusing on spatial devices like facades, balconies, and windows that define the public and private spheres. It delves into historical urban design principles, emphasizing the relationship between buildings, monuments, and public spaces, as discussed by Camillo Sitte in 'The Art of Building Cities'. The presentation analyzes the layout of ancient squares, highlighting the importance of irregularities and the organization of spaces. It also examines the shift in urban planning towards rectangular systems, contrasting with traditional irregular layouts. The discussion extends to the impact of modern architecture on privacy and publicity, referencing Adolf Loos and Le Corbusier's views on the role of windows and clothing in contemporary society.