The document summarizes a restoration and adaptive reuse project of the 13th century St. Paraskeva Church located in Nessebar, Bulgaria. The project restored and adapted the church, which had fallen into disrepair but remained culturally significant, to house an art gallery. The architects analyzed the building and carried out restorative works while respecting the original architecture. The project addressed the building's deterioration and adapted its use in a way that preserved the cultural heritage of the ancient city of Nessebar, which is a UNESCO World Heritage site.