Virtual City Systems offers innovative solutions for managing, distributing, and using digital 3D city models. We believe that Digital Twins of cities based on 3D geoinformation form an essential foundation for understanding, designing and solving the complex challenges of our urban reality. Our portfolio covers expert solutions for surveying and GIS departments as well as solutions for city planning and energy simulations on top of 3D City Models. Our solutions integrate 3D web mapping with oblique imagery, pointclouds and 2D web mapping. CityGML: We are experts for the CityGML OGC standard and we guarantee the highest possible level of data compatibility when processing CityGML documents. Learn more about CityGML at our extensive training sessions. 3D SDI: We offer solutions for processing, storage, distribution and web visualization of 3D city model data. We can help you to build your 3D SDI or you can add necessary components to your system. OGC Member: virtualcitySYSTEMS is a member of the Open Geospatial Consortium (OGC) and we offer our software solutions based on internationally-defined OGC standards