Held on June 9th, International Archives Day aims to shed some light on the myths surrounding archives by engaging with the public and opening the treasure trove that is the archive. This exhibition is a joint project of the HAEU and the Archives Services of European Union institutions and presents some of the EU archivists’ favourite documents, a selection demonstrating the individual’s connection to the material that arises during the process of treating collections. In this spirit, we have asked each participating archivist to choose a document that they consider important and then explain why. We hope you enjoy this behind-the-scenes view of the archives.