Volunteers will be helping with revitalizing the old ruins of the small Obisovce Castle in Slovak Carpathians. The Obisovce Castle was the first completely uncovered castle in Slovakia. Almost no information has been preserved about the history of the castle. After its discovery in archeological research in 1961 it was not preserved. Only many years later, in 2012 Associaton Rákociho cesta prepared plan to restore the castle to save this heritage for future generations. The volunteers will be involved in renovation work, cleaning the area, help with masonry work using the traditional techniques, transport of the material (like sand, rocks, and water.) The volunteers will learn about the history of the castles in Eastern Slovakia. No building and archeological experience are needed. The working hours will be from Monday to Friday, approximately 8:30 – 15:00, including a lunch break. By participating to this project you contribute to protecting the local cultural heritage (UN SDG 11).