EGNATON conferences serve the personal acquaintance of members, the professional exchange between internal and external experts, as well as the information of the interested public. They usually occur at exceptionally versatile science/technology locations - such as the Harnack House of the Max Planck Society in Berlin-Dahlem in 2017. Included were guided tours of the Fritz Haber Institute of the MPS, the MPS library and the sites and history of the Dahlem science campus.