The project of four pocket parks is being carried out in the framework of the sustainable neighbourhood contracts (contrat de quartier durable), an urban renewal policy at regional scale in Brussels, in which regional funds are subsiding communal urban refurbishment. In a specific communal perimeter – a neighbourhood – a group of operations such as public space renovation, public housing development and public equipment construction are being developed within a four-year program. Since the launch of this policy in 1993, about 80 contracts have been successful. Being part of one of these local contracts (Bockstael), the four new pocket parks are located along the L50 railway lines, on leftover and residual spaces. Meant to complete a set of larger operations, the four plots’ smaller sizes and undefined status locate them at the edge of traditional design and allow for an experimental process. At the intersection of architecture, landscape, urbanism and sociology, the project is carried out for the city of Brussels by a multi-disciplinary team of designers.