The building is located as the end or the beginning, depending on how you look, at the west far of the industrial estate in Vallecas, Madrid, a place surrounded by infrastructures without references. Again, an uninspiring context, difficult to deal with. The visibility provided by this situation and the need of exterior space for parking the vehicles of the public service defines the building position on site, organizing a clear and efficient ring for traffic circulation around the constructed volume. This volume, compact, emphatic and precise, is shifted and orientated towards the main roundabout to affirm its silent presence facing the surrounding disorder, to receive the visitors and hide the vehicles. A simple yet heterogeneous programme organizes the different uses in programmatic strips one next to the other, without interruption. Offices, changing rooms, garages, car wash, and warehouses lead off in the space, gathering together in legible strips as well in floor plan as in section, generating a compact outlined figure of constant height. This functional diversity is submitted to the discipline of using a single façade system made out by industrialized corrugated sheets, in three different finishes, depending on areas. These materials, corrugated steel and polycarbonate sheets, as a refined reference to the context, distort the scale of the construction and create a jazzy combination of brightness and reflections. For this purpose, doors and windows are fully integrated in continuity with the exterior skin by using the same perforated sheet panels, a solution that also addresses the sunlight control and the presence of the infrastructures that surround the building, with high traffic density. A single opening perforates the abstract volume to point out the access like a true boîte à miracle. The structure is resolved with prefabricated concrete porticos. All previously described results in the idea of achieving a well-balanced use of resources in the construction of the building, including all the details, which become more visible by their absence. This is the third built project in a row of the same series, after the industrial buildings in Vicalvaro and Boadilla del Monte.