Cities play a crucial role in implementing international agreements such as the Paris agreement and the Agenda 2030. Climate Alliance of European Cities with Indigenous Rainforest Peoples, with the help of its local authority (LA) and civil society organisation (CSO) partners, strengthened the role of LAs in localising and implementing the Sustainable Development Goals (SDGs). It enhanced European citizens’ critical understanding and changed the behaviour of LAs and citizens through development education and awareness raising.