Since 1990, the association organizes international workcamps of one three weeks duration voluntary young people on the site of the medieval castle of Chevreaux.

Poland, Slovakia, Slovenia, Hungary, the United States, Italy, England, Germany, Tunisia, Morocco, Algeria, Australia, Canada, Denmark, Scotland, Egypt, Spain, Netherlands, Romania, Russia, Czech Republic, Sweden, Northern Ireland, Norway, Finland and France; on the whole more than 550 young people of 26 different nationalities came to work on these building sites.

Work of clearing, stoneworking, masonry with lime, carpentry, clearing and archaeological excavations form the various working stations.