ESS, which primarily comprises a more than 500-meter long proton accelerator, is actually a giant microscope that can photograph and film single atoms of many different materials. The microscope operates by a process in which a target disc made of tungsten plays a central role. The heart of the research center stands out with a large circular roof above the hall where the tungsten disc is located. Around the research center, a campus consisting of laboratories, offices, and teaching facilities is developed. The design centers on creating healthy and efficient workspaces in combination with a world-class research environment. ESS is a pan-European project with participation of 17 countries.