ICTJ hosted its third Intensive Course, Truth-seeking and the Challenge of Sustainable Peace, on September 26–30, 2011 in the historic Castell de Montjuïc in Barcelona, Spain. The castle, formerly a military detention center housing political prisoners, is being transformed into a civic space dedicated to preserving the memory of past conflict and facilitating dialogue on peacebuilding initiatives. The course was run in conjunction with the Barcelona International Peace Resource Center (BIPRC), an initiative of the City of Barcelona which conducts training in peacebuilding and conflict management.