The aim of this study is to evaluate current restorations and presentations of Byzantine defense structures in terms of sustaining and enhancement of the cultural heritage values and their success in solving conservation problems. So, better management of future interventions may be possible. Case study approach was undertaken: Three castle ruins in Cilicia, Turkey were focused on: Yılan and Feke castles and Kızkalesi in Korykos. The cases are located in the present-day rural areas. They are restored recently. The study consists of literature review, site survey, documentation and analysis of geographic characteristics, historic background, morphologic characteristics, construction technique and material usage and conservation activities of the case studies, identification of the cultural heritage values and conservation problems before and after interventions at the landscape, site and building scales; and discussion of the effects of the interventions on values and problems in comparison with case studies from abroad. As a result, it was determined that interventions were either unsystematic or implemented more than necessary. There is lack of a holistic approach for interventions. While some portions were intervened, others were left in-situ without any interventions. There is a tendency for reconstruction and reintegration in general. It was seen that current interventions either sustain already accumulated cultural heritage values or they have negative impact on them. Consequently, enhancement of values is not observed. Meanwhile, some of the conservation problems were ignored.