Climate change has not truly manifested itself in extreme forms in Sofia yet. The two major risks for our city are extreme heat waves and floods. Mitigation on urban level is essential. Nature-based solutions can tackle those two risks best. No more air-conditioning, no more concrete against floods but more green areas and porous surfaces to absorb extreme rain, as well as to diminish the heat island effect. Urban planning, local taxes and the way they are implemented are a good tool to achieve this. In theory.