RegionsWithNature is a partnership initiative between Regions4, ICLEI, the European Committee of the Regions, IUCN and the Group of Leading Subnational Governments towards Aichi Biodiversity Targets that was launched during the 2nd part of the CBD COP 15, in December 2022.

RegionsWithNature (RwN) brings together the strengths of leading organisations and networks of regional governments in one global platform, which counts with the endorsement of UN agencies such as the UN Environment Programme and the Secretariat of the Convention on Biological Diversity.

RegionsWithNature is an easily accessible, user-friendly and free online platform that connects regional leaders and their partners; provides them with tools and resources that builds capacities by translating good practices into knowledge, such as the Case Study Database; and allows them to share regional commitments to achieving the global nature goals.

Regions and partner organizations joining will benefit from contributing to the outcomes of the Edinburgh Process, particularly the Decision and Plan of Action, which was adopted at COP 15 within the Kunming-Montreal Global Biodiversity Framework, on the engagement with subnational governments, cities and other local authorities to enhance implementation of the new framework.

All regional governments of the world are welcome to join.

To sign up, please click in the link below:

Visit the RwN Website

Join RwN

The Case Study Database


The Case Study Database (CSD), a featured tool of RegionsWithNature and a permanent project led by Regions4, is the only Database exclusively dedicated to showcasing the subnational experience in the sector. It is an open online source of knowledge creation that documents regional success stories. It is accessible to all and all documents are available in the three Regions4 official languages: Spanish, French, and English.

Its goal is to build and develop capacities at the regional level of government, transforming on-the-ground knowledge into learnings and making them replicable and accessible to other subnational governments with similar challenges. The Case Study Database also aims to support the exchange of experiences, development of innovative solutions and tools to replicate subnational governments’ good practices, to showcase subnational good practices and recommendations to feed global discussions on biodiversity, and to make the case for subnational governments in their advocacy efforts, demonstrating the prominent role of subnational actors in tackling biodiversity loss and boosting environment preservation.

The Case Study Database is also a key instrument supporting the implementation of the Kunming-Montreal Global Biodiversity Framework at the subnational level of government through peer-to- peer learning and information sharing.

Click below to visit the CSD and learn about the efforts from other regional governments to live in harmony with nature:

Visit the Case Study Database

Visit the CSD

Your region can share its good practices too!


The Case Study Database is a permanent project that is open to receiving new cases on a continuous basis. Subnational governments wishing to feature a case study within the Case Study Database should complete a template provided by Regions4 and submit it for revision and approval. If you are interested in participating in the Case Study Database, contact


Join us!

We look forward to collaborating with your regional government.

    Renata Gomez, responsible
    of this project:

    Renata Gomez

    Biodiversity Programme Manager