The conference will bring together scientists interested in the theoretical and experimental study of the structural and related electronic properties of crystalline surfaces. Several novel material systems have been in the focus of condensed matter research in recent years. Examples are two-dimensional materials and their heterostructures, TMDCs, and topological materials. For all of them, surfaces and interfaces play an important role. The careful investigation of structural aspects at the surfaces and interfaces of these materials, in addition to more traditional metals, semiconductors and oxides, will be one of the foci of the conference. Other recent developments that will feature prominently are the extension of ultrafast experiments to the investigation of surface structures, the use of angle-resolved photoemission for structural investigations at surfaces, and the possibility to craft atomic and molecular structures with scanning probe microscopes which allows the creation of designer materials with tailored properties.