The scope on which the building plot of the office building is located is in Osijek in the Gacka business zone. The building plot of the office building is located in the western part of the scope and borders on the east side with the building plot of the market where the square is located. The office building is surrounded by greenery on the north side and a body of water, on the east side there is a square, while on the south side there is a parking lot which is accessed from the west road. On this building plot that has a surface area of 7238 sqm, there are two other commercial buildings. The architectural concept arose from thinking about the urbanism of the scope.Namely, as the topic of urbanism are the fields of Slavonia and Baranja, which with their shape create a harmonious grid, came the thought and the question of what else can be found in the fields besides various agricultural crops. The answer to that question was the greenhouse. The design of the space resulted from the analysis of the greenhouse space. In the greenhouse, there are seedlings that are logitudinally planted, which results in a pathway between the rows of seedlings. It can be seen that the central space is completely open and free of any obstacles, and all the materials that we need to work with are located in the corners and along the edges of the greenhouse. From this observation of the seedlings, a functional organization of the building space resulted, in which the service spaces are located around the edges of the building, which left a free empty space in which offices and other ancillary rooms are located. This layout of the rooms resulted in the acquisition of three rows of offices separated from each other by logitudinal corridors that with stairwells form the main communication of the building. Individual offices and meeting rooms, as well as socializing and relaxing areas, are located on the front of the building, while the middle of the building is filled with an open-space office area that provides the greenhouse-like openness. The office building is rectangular in shape, measuring 34x16 meters, with six floors. The theme of urbanism also appears in the design of the building whose front resembles a grid of fields. The grid on the front consists of glass walls of various dimensions separated by aluminum frames and movable polycarbonate panels that serve as sun protection and view protection. The panels are not located on the ground floor due to the transparency of the building and the visible separation of the base from the body of the building. The materials used were glass for the front and polycarbonate for the panels. The interior of the building is dominated by partition glass walls. The load-bearing structure is a composite structure of steel and concrete. The main role in the construction have the steel honeycomb girders, which enable large ranges of the construction.