In this paper we present the WissKI System, an open source Virtual Research Environment and Content Management System for Cultural Heritage. It promotes semantic enrichment of data on the basis of OWL / RDF using the ontology CIDOC CRM / ISO 21127. The data is rendered in a Wikipedia-like fashion, combining textual, visual and structured information (info boxes) for a documented object on one page. Likewise, data can be acquired using field–based forms and semi–automatically annotated free text, resembling the most common traditional modes of documentation in the cultural heritage domain. This retains a user–friendly visualisation while at the same time providing detailed RDF triple data for automatic processing and data exchange.