A brochure has been developed to provide an overview of Transnational Access (TNA) and Virtual Access (VA) opportunities offered through European research infrastructures under Horizon Europe and Horizon 2020. The brochure is addressed to researchers and research teams interested in accessing scientific facilities, services, and digital resources across Europe. It presents the main principles of TNA and VA, eligibility conditions, and available access mechanisms. For more details, the full brochure can be accessed online via the link FREE ACCESS TO RESEARCH INFRASTRUCTURES!