An information hub for local and regional governments, civil society organisations, and more, the European Sustainable Cities Platform focuses on collecting and sharing information, best practices, resources, and events that advance the local implementation of the European Green Deal and support sustainable urban transformations across Europe.

The platform includes the Transformative Actions Database, which presents existing transformative actions - in line with the Basque Declaration and the Mannheim Message - as good practice.

The European Sustainable Cities Platform was launched in 2016, following the 8th European Conference on Sustainable Cities & Towns in the Basque Country. The platform is supported by the City of Aalborg, Denmark and ICLEI Europe.