Brussels
- Brussels Environment
- Brussels Research Unit for Environmental, Geochemical and Life Sciences Studies (BRUEGEL)
- Royal Museum for Central Africa (RMCA)-Section for Mineralogy and Petrography
- Scientific Institute of Public Health - Louis Pasteur (IPH)
- Université Libre de Bruxelles (ULB)- Laboratoire de Géochimie et Minéralogie appliquée
- Vrije Universiteit Brussel (VUB)-Laboratory of Analytical and Environmental Chemistry
- Official portal site for the Brussels Capital Region
- Atlas des oiseaux nicheurs de Bruxelles 2000-2004
- Brussels website on urban trees
- Brusselse Raad voor het Leefmilieu (BRAL)
- Council of the Environment of the Brussels-Capital Region
- Direction of Monuments and Sites
- Direction of roads (Direction Gestion et Entretien des Voiries)