The Swiss Light Source (SLS) at the Paul Scherrer Institute is a third-generation synchrotron light source. In the design of the Swiss Light Source, a high priority was given to the high brightness of its beam, its wide wavelength spectrum, and the stability of its temperature conditions. The Swiss National Source is open for international research groups as well as Swiss users, and offers unique research opportunites to academic research teams as well as industrial research groups. With an energy of 2.4 GeV, it provides photon beams of high brightness for research in materials science, biology and chemistry. Images courtesy of Swiss Light Source and ScanderbegSauerPhotography.