The complexity of daily life involves innumerable phenomena which act upon us shaping our physical and mental reality. This thesis focuses on one of these phenomena, the act of transition, and its influence upon human perception and, consequently, upon architecture.Transition, the act of change, is a key element in our existence. Our awareness of constant change predisposes us to expect transition in the objects and events of our life. Once architects understand this important frame of reference, they can stimulate and engage the intellectual involvement of the users of the buildings they create. Finally, this involvement produces a simple consequence, it produces pleasure in the architectural users.