The competition is over for what will one day be the world’s largest and advanced facility for neutron-based research. Henning Larsen Architects, COBE, and SLA won the international contest for the European Spallation Source (ESS) in Lund, Sweden. The architects had to create a dynamic facility with research laboratories and central meeting places. They included a visitor’s center as part of the complex will be open to the public for educational purposes. The center will be open for researches in 2019, and all buildings will be complete by 2025. ESS will house between 2,000 and 4,000 researches and scientists every year.