The Château de Grignon will welcome 308 East African refugees from Mayotte. The disused site, owned by the State, had already hosted 200 homeless people for a few months in the winter of 2022.
The refugees, mainly single women and families, come mostly from East Africa. They had fled their country to try their luck on Mayotte, a French island in the Indian Ocean where almost half of the population is made up of illegal foreigners. In 2016, Thiverval-Grignon was planned to host the new training center for the Paris Saint Germain football club.