In this final paper, entrepreneurial support institutions are described with reference to Karlovac County as well as their role and significance. The purpose of developing and improving business infrastructure is also explained, which is focused on economic growth through the planning and construction of business infrastructure. Entrepreneurial infrastructure includes entrepreneurial zones, including the system of free zones and entrepreneurial support institutions of the Republic of Croatia. The business infrastructure must be equipped with communication, traffic, energy and utility infrastructure. The basic characteristic of entrepreneurial zones is the joint use of an infrastructurally organized and equipped space by entrepreneurs who, by doing business within the entrepreneurial zone, are enabled to rationalize their business and use the available resources of the entrepreneurial zone with other users of the entrepreneurial zone. Entrepreneurial support institutions are legal entities aimed at creating a user-oriented entrepreneurial environment in the Republic of Croatia and implement programs aimed at the development of entrepreneurship. The category of entrepreneurial support institutions are development agencies, entrepreneurial centers, business incubators, entrepreneurial accelerators, business parks, science and technology parks and competence centers, and they are briefly described in the paper. The paper also presents general information about Karlovac County, accommodation and number of inhabitants, as well as a table with business zones and support institutions in the area of Karlovac County. Based on the available data, a SWOT analysis of Karlovac County is presented. The task of this final paper is to refer back to the newly created Nikola Tesla Experience Center, and to list and explain the activities, equipment and purpose of the same.