This dissertation explores the complex notion of detail in architecture, sometimes perceived as an insignificant element of no importance, at other times seen as a vector for emotion. Although there is no clear definition of detail in architecture, it oscillates between two poles: the "constructive" detail, necessary for the construction of a building, and the "sensitive" detail, carrying meaning and emotions. Examples such as the rivets of the Eiffel Tower or the slit brick pattern of the Vitra Schaudepot show that, beyond its constructive function, detail is key and can also serve as an emotional trigger. While constructive detail seems unavoidable, should sensitive detail not be the vector that allows architecture to enter a new dimension?