Constraints. The project responds to the particular characteristics of the group of five plots that make up this fragmented block of the Eixample and its surroundings. The uniqueness of this group of plots originates in the recovery of a space previously occupied by the railway tracks, turning it into a green and leisure space. This process of urban transformation generates a series of tensions that lie in the coexistence of buildings that respond to different realities. Specifically, the buildings on the adjoining plots with a building depth much lower than that currently permitted mean that the partitions of the proposed building have a strong presence from the bridge on Carrer Marina and from Carrer Sardenya, which means that the future building will be perceived more as an isolated building than as a building between partitions. Implementation. Based on these conditioning factors and programmatic requirements, a building is proposed consisting of two bodies separated by a central courtyard, which functions as a green lung and as a communications space. Of the two volumes, the one that has a façade on Carrer Alí Bei occupies the entire width of the plot and consolidates the front of the block facing this street. The second building is conceived as an isolated building, with its sides treated as façades thanks to their asymmetrical displacement with respect to the boundaries of the plot. These lateral displacements respond to the different realities of the context they face and achieve better ventilation and lighting of the central courtyard, as well as the expansion and appearance of new views over the particular environment in which the proposal is located. Programme. The ground floor is treated as a facility, where all the collective spaces of the accommodation programme are located, incorporating the central and lateral courtyard as communication and relationship spaces. The accesses are through two passages placed at opposite ends of the Alí Bei façade, crossing this built body and guaranteeing the independent functioning of both parts of the programme. On the first floor there are the living quarters which, despite their small surface areas, maintain the character and rhythm of the dwellings on the upper floors. The remaining five floors, which are used for the dwellings, are organised on the basis of the displacement made at the ends of the building. Thanks to the good lighting and the diagonal views towards the Marina bridge, the vertical communications nucleus becomes a relationship space in continuity with the collective spaces already planned in the programme and which are located on the third, fifth and sixth floors of the body with a façade facing the football pitch.