After the Big Bang, matter and antimatter were produced in exactly equal quantities through materialisation of the huge amounts of energy released. Today, however, there is no antimatter at all in the universe. To investigate this fundamental problem, the EU-funded ESSnuSB project worked on demonstrating the feasibility of using the unique in the world powerful proton accelerator of the European Spallation Source (ESS) currently under construction in Lund. The EU-funded ESSnuSBplus project will now examine the civil engineering requirements for the underground constructions of the proposed ESSnuSB research infrastructure as well as study the construction of a second special target station, a low-energy nuSTORM muon ring and a low-energy monitored neutrino beam instrumented tunnel, to be used for precise neutrino cross-section measurements required for the ESSnuSB project.