An international conference bringing together some 400 laser scientists from 29 countries began in Szeged, southern Hungary. The five-day Attosecond Science and Technology Conference will cover all aspects of attosecond science and technologies including sources, metrology and applications. ATTO 2019 will also feature presentations by 19 researchers with great impact made through their work on attosecond science. On the conference’s closing day participants will visit the ELI-ALPS laser research centre inaugurated in Szeged in May, 2017. The facility, part of the European Union’s Extreme Light Infrastructure (ELI) project, makes a wide range of ultrashort light sources accessible to the international scientific community.