With the destabilization of northern Africa and because of the many conflicts on the African continent millions of people continue to arrive in Europe, this is why we need a serious rethinking of our cities to avoid the creation of camps, dormitory towns and suburbs. European cities can be reconsidered inspired by the new migration flows, the integration of immigrants within the system of the spaces of our cities can avoid isolation and ghettoisation. Our idea of architecture's future is the recovery of brownfield sites, reusing existing volumes inside the town centers not used in the present, the census of urban voids that can be redesigned and used to create new housing integrated into the urban texture. The city can be layered and new layers will overlap with existing generating new space for the future.