This paper details the main concepts and the architecture of WikiBridge, a semantic wiki, developed for the project CARE (Corpus Architecturae Religiosae Europeae - IV-X saec.). The aim of the project CARE is the constitution of integrated corpus of the European Christian buildings dated from the 4th to the beginning of the 11th century. A semantic wiki, called WikiBridge, is developed in order to: 1) allow collaborative work of researchers involved in the project and 2) open the corpus to a large public. WikiBridge combines collaborative and traceability aspects of wiki with semantic consistency and query capabilities. Semantics is guaranteed by an application ontology based on CIDOC-CRM.