The first implementation phase of the ELI Beamlines project was concluded and the laser facility in Dolní Břežany was inaugurated on October 19, 2015 in the presence of many distinguished guests from the world of science and politics. The initial greetings were given by Czech and foreign guests, including the President of the Czech Academy of Sciences Jiří Drahoš, Director of the Institute of Physics Jan Řídký, the President of the Senate of the Czech Republic Milan Štěch, Archbishop of Prague Dominik cardinal Duka, Director General of the European Synchrotron Radiation Facility (ESRF) Francesco Sette, Director General of the ELI-DC International Association Wolfgang Sandner, Chairman of the European Strategy Forum on Research Infrastructure John Womersley, French physicist and founder of the ELI project Gérard Mourou, Deputy director for science and technology in the Lawrence Livermore National Laboratory in California Patricia Falcone. Guests were invited to see laser and experimental technologies directly in one of the laser halls. and Marina Hužvárová a Jana Olivová.