The XML-based languages GML, XSLT, and SVG can be used not only for modelling geographic data in an application-oriented fashion, but also for visualizing it in a way closely resembling conventional maps. In this case study, we demonstrate these two features first by remodelling in the Geography Markup Language (GML) real-sized sets of geographic data available from several German authorities for land surveying, and then by mapping this GML-structured data to elements of the language Scalable Vector Graphics (SVG) with the help of the Extensible Stylesheet Language for Transformation (XSLT). In doing so, we model the process of cartographic visualization using XSLT constructs and implement it at the same time. As the result, we obtain graphics which are at least somewhat similar to the corresponding maps provided by those authorities.