The Church of St. Vitus in Česky Krumlov was built around 1400 and is rightfully considered one of the finest examples of beautiful architecture. The adaptations of the church, which originated in the Late Middle Ages, have been unjustly overlooked until today; they are not too extensive, yet the analysis of their morphology reveals that the sanctuary and the gallery rank among the best masonry work under the rule of the Rožmberks. Same as in other towns and estates, the construction work in Český Krumlov was financed particularly by the burghers and the gentry, with the contribution of priests who, due to their education, personal ties and authority, undoubtedly influenced the selection of projects and masters called to work at the construction site. In our case, this is validated by the names of donors, preserved testaments and references, formal morphology and occurrence of mason marks in the region as well as by the priests in Krumlov and the surrounding areas. and Roman Lavička.