The IMFN is a voluntary international network of over 60 large-scale forest landscapes in 30 countries that promotes sustainable forest management through broad partnerships at both the local landscape level and global network level. The IMFN was launched in 1992 to translate sustainable forest policies into practice. Each IMFN site establishes diverse local partnerships and engages partners at various levels, including government agencies, NGOs, research institutions, and over 1,000 field-level partners across the network. The IMFN has found that establishing complex multi-stakeholder partnerships, linking sites to policy networks, and cultivating local leadership are key to the long-term sustainability of large-scale, multi-site landscape initiatives.