To contribute to catalyzing the transition towards a sustainable, circular economCircSyst, presents a series of shared Demonstration Experiences of new technological and societal adaptations to a Circular Economy involving 8 European regions: Valencia (SP), Maribor (SI), Flanders (BE), Gotland (SW), Paijat-Hame-Lahti (FI), Castila la Mancha (SP), Central Macedonia (EL), and Central and East Hungary (HU). The project focuses on three of the priority value chains of the Circular Economy Plan: Water Management, Biowaste, and Plastics and Packaging, as well as in the potential synergies among them. 4 Demonstrators are proposed developing and validating solutions for Water Management, 2 demonstrators will be implemented, dealing with waste from different sources and extracting valuable substances directly applicable in the other addressed value chains, by the Biowaste field and, in the Plastics and Packaging field, the project will tackle main aspects of plastic waste management (including eco-design, cost-effectivesegregation, and recyclability) through 3 demonstrators. Work Packages on Communication & Dissemination, Knowledge Transfer, and Results Exploitation and Impact, are designed to ensure that that the results adequately reach key stakeholders in governments, private organizations, and civil society with the cooperation of the CCRI Coordination and Support Office. OBJETIVOS The main objective of CircSyst is the development and demonstration of a range of novel Circular Systemic Solutions (CircSyst Solutions or CSS) that increase sustainability by applying innovative holistic circular models at local and regional scales. The demonstrators are intended to give solutions to specific problems in their geographical scope, and to cooperate amongst them in a symbiotic approach that delivers extended Circular Systemic Solutions (ECSS).