During the past two years the TU Delft Library has developed a repository to store data about architecture and town planning in the former Dutch colonies. Historical images, books, journals and archives coming from libraries and museums are scanned and stored into the repository. Information about architects, buildings and town plans and organizations are added and linked to the available data. Semantic technologies are used to enrich the content of the repository thus creating an environment where researchers have a wealth of information at their disposal.