Manifesto – the climate crisis is the greatest challenge of our time. Architecture must confront this crisis and finally take responsibility. Without exception, every decision must be scrutinised for its ecological and social sustainability. This begins with ground. Ground belongs to all of us. Put an end to its financialisation and the excessive consumption of our livelihood. Let us move towards climate justice and the common good. Let commons make a comeback! Let us reclaim the ground as a common resource and collectively create commons. No more spatial monocultures on our land. No more monotonous housing. Let us create more-than-housing in a productive city, capable of fulfilling more functions and doing so for extended periods. Let us abandon the desire for ideal final states, as they have never existed. Shift away from floor plans of rigidly defined life models and embrace open layouts for liberated living. Let us shape new spaces from existing ones. End the throwaway society – lines must transform into circles! The city is our resource; let us finally mine the anthropogenic mines we ourselves have created. The effects of the climate crisis are unparalleled, thus our efforts and endeavours to avoid it must be just as unparalleled. Stop searching for obstacles. Start discovering opportunities.