The town of Montigny le Tilleul wanted to unite all their administrative and social services into one building. They organized a competition for engineers to design an extension to their old building with the following criteria:
Low in energy consumption.
Easily accessible for persons with a disability.
Welcoming and comfortable for the citizens visiting it and the people working inside.
A good connection to the older building.
Preserving the surrounding green spaces.
The result is a very modern, light and transparent building that seems to be defying gravity.