The proposal is based on three basic concepts: folding, movement, boundaries. Originally, the building was conceptualized as a continuous form, capable to include the continually changing ephemeral conditions of the modern era. The basic tool of this morphic transference is the folding. This is a unifying tool implemented on both horizontal panels and vertical surfaces. The linear shell along Palaiologou Street emphasizes the constant motion, which is exacerbated by the elongated geometry of the plot. Therefore, spatial relationships are constructed and can be described as the structure that limits and forms an infinitude of possible movements. Finally, the building is formed as a structured limit to the urban fabric containing the train network. Interestingly enough, in this "technical" boundary, we locate a plant area of high pines, which eventually form a "natural" limit. A threshold that is not the end, but the transition from the “technical” to the natural by actively participating in the composition.