The presented project concerns the design concept and process, as well as the preceding methodologies for the development of an architectural intervention in the Rotterdam South. Main notion of the project is the idea of permanent transition in the architectural and urbanistic realms. The concept of migration is used as the starting point for the project. Migration can be understood as a dynamic process from the perspective of the moving object, or idea; however, it may also be a study of change of factors in the given area. In order to enclose this definition within urban context, it can be said that the migration is the multiplication of the architectural idea with variable alterations in time and space. It is necessary to analyze permeability in the search of the solution for the temporality balance. The city of Rotterdam is used as the case study for this research, because it allows for a valid description and evaluation of all processes ongoing in the migration mechanism. With the resultant findings, based on literature studies and site analysis, a design brief is defined, with a subsequent concept. The intervention resolves the urban borders, allowing for the connection of the surrounding neighborhoods. Hence, a high degree of permeability is achieved with the use of introductory and reoccurring temporalities.