This document discusses sustainable landscapes and investments to support them. It notes that sustainable landscapes cut across sectors like forestry, agriculture, food security and climate change. The document proposes that sustainable landscapes could be their own UN Sustainable Development Goal due to their cross-cutting nature and ability to address livelihoods, the environment and the green economy. It argues that investments need to be scaled up in sustainable landscapes, which will require overcoming barriers like limited access to long-term financing and high transaction costs. The document concludes by recommending that policies cut across traditional sector boundaries to support sustainable landscapes and facilitate affordable, long-term financing for landscape investments.