This article approaches three architectural facts, three works of architecture: three embassies designed by the same architect. They are the centre and horizon of the article and its goal is to make explicit the architectural processes, strategies, and decisions of conceiving and designing them. Therefore, this article gives words to things above all, while citing one or two insightful ideas from other authors. Its immanent verbs are to show and to reveal. Through dense descriptions and critical redrawings, this article seeks to prove that the creative design process of Guillermo Jullian de la Fuente is a continuous one, which can be seen through a deep examination of his buildings’ courtyards, the apparently empty residual useless spaces. The idea of courtyard is what gives purpose to Jullian's whole design process. Jullian's game is to decide their formal characteristics through a series of abstract matrices of lines and patches. In his design process, every step and every work is a possibility for evolution, variation, or disruption. There are no intellectual causes behind these foral studies but a set of creative decisions. This article also tries to show when and where those decisions occur. It seeks to contribute to the practice of design research.