The development of this 45 ha site, surrounded by dense and lively districts (the Maritime and Marie-Christine districts) was planned by this Master Plan, fed by participatory thinking. The development of the Master Plan was carried out in consultation with all the stakeholders so that a common vision of the site could be developed. This was adopted by the Brussels-Capital Region in December 2008. It pays particular attention to green spaces, active mobility, diversity, the enhancement of heritage as well as sustainable development.