Walden 7 is one of Taller de Arquitectura’s pioneering housing projects, designed to address the problems of modern city living—in particular, how to balance communal spaces with privacy. Located just outside Barcelona, the complex features five interior courtyards and 446 residences spread across 18 towers of 14 stories each. The towers are modular, but they are arranged in an organic, unsystematic form and connected via communal spaces and bridges to create distinct identities.