In which way does power manifest itself? How can we document it? Written sources, monuments, and artefacts from the Middle Ages testify to a living environment, which still influences our present days. By classifying these testimonies, interrelating and locating them, one could describe medieval centres of power more properly in a spatial context, structures of power in a more complex way in terms of hierarchy, and the exercise of power more concretely from a formal perspective, all of them together as maps of power. The digital Cluster Project Digitising Patterns of Power (DPP): Peripherical Mountains in the Medieval World of the Institute of Medieval Research of the Austrian Academy of Sciences reconstructs these power structures. Due to assembling many and quite different data in a project-related database, interactive maps can be provided online. They illustrate how medieval power structures become apparent in space and over time as "Signs of Power" and subsequently as "Patterns of Power." By that approach they even shine out, interactions are unveiled as well as interdependencies between natural and humanly shaped environment, the control and development of economic infrastructures and the associated establishment of political and ecclesiastical power. This volume presents the project's scholarly results of the DPP Case Studies, technical and methodological reflections about relevant software engineering, about the cartographic and GIS-based analysis as well as the visualisation of the project's datasets in the World Wide Web. Moreover, it shows the subsequent, possible applications of this project by highlighting its relation to other, closely connected digital endeavours.