Architecture, today, is more and more considered as an object of investigation and research to the point of constituting a special field. Sociology, psychology, semiotics, architecturology, typo-morphology are various disciplines taking architecture as an object or as a field for research. Other points of view could still emerge (does an economy of architecture exist ?) even if not developed yet. Are they constituting themselves a discipline ? Starting from scientific considerations which drove me to the idea of architecturology, my concern will be to try to estimate the epistemological problems involved with the variety of architectural research. An in-between Discipline or a non-discipline?