With this initiative, the partners aim to create a European circular innovation valley, connecting nine different EU regions/territories. The strategic objectives of the project are: 1. Make significant progress in the transition to a circular economy of the participating regions (and the EU as a whole; 2. Generating sustainable growth and development in the participating regions (and the EU as a whole), by making more effective use of economic opportunities offered by the transition to a circular economy, through systematic cooperation. The project consists of two parts: 1. A joint and coherent package of strategically oriented measures and activities to improve and strengthen the (mutual) coordination and direction of research and innovation investments and policies. 2. Organising and implementing a number of joint open calls, with which concrete interregional innovation projects with companies, among others, are recruited and implemented.