In Madrid, on the southern slope of the Retiro Park, is located a nursery-greenhouse for ornamental species with a mixture of sheds. An active place, but not used, since the city council raised a tender in 2019 to carry out works to improve the water supply to these buildings. The location of the project, and the exposure on the slope towards the urban fabric, makes the concept of rus in urbe fully usable, proposing a more ambitious project that collaborates with the future repopulation of Madrid with floral species and trees creating in turn, an ecosystem for the birds that nest in the Retiro Park in the midst of urban densification. The project "Eden Archipelago" is among the winners of the 2023 edition of the EU Prize for Contemporary Architecture / Mies van der Rohe Awards in the Young Talent category.