The aim of the bachelor thesis was to design the oratory of the Salesian Center, which will reflect its current requirements. Salesian Center will be located in the northern part of Dubravka in Bratislava. The oratory is divided into 3 main parts, a part consisting of places for leisure activities, a chapel, and an accommodation for priests. The oratory building consists of three above-ground floors. The idea was to use floors to gradually separate the oratory from the noisiest parts on the first floor to the quietest upward. The first two floors serve to run the oratory which consist of an entrance hall, a playroom, a tea room, a library, a music rehearsal room, a chapel with a sacristy and rooms for meetings. The third floor is an accommodation for the priests with access to the green roof.The bachelor's thesis consists of an accompanying report, summary technical report, technical report and attachments. Next, from the graphical part of the portfolios, the structural part and the poster.Project documentation is processed at the level of planning permission and the selected part at the level of the construction project.