The aim of this graduate thesis and its related research was to analyze the potential of congress tourism in Opatija and to consider the possibility of further development of congress tourism in order to improve the business of the Grand Hotel 4 Opatijska cvijeta. Its potentials are manifested through accommodation capacities, complementary offer, location, etc. The work itself can be divided into two separate units, so in the theoretical part of the paper there is a sort of summary of all relevant concepts and their definitions of manifestations, manifestation tourism and congress tourism , as well as the history of congress tourism. In addition to fundamental theoretical concepts, it is an insight into the current state of this form of tourism in the world, and the importance of the development of congress tourism is currently present in the world. In the second part of the paper, the focus was on an interview where it was attempted to gain insight into the specific issue when it comes to the real and empirical experiences of the Grand Hotel 4 Opatijska cvijeta business in the domain of congress tourism. It is clear from the above that congress tourism has an inevitable influence on the destination itself and can in some way result in some kind of fueling on the tourist market, which can result in a whole range of benefits in terms of extending the tourist season itself, but also spending throughout the year. This work will be useful to not only college colleges in order to gain insight into the real-like shadows but also to all other people who are directly or indirectly synergistically involved in the work of congress tourism. business tourism; congress tourism; Grand hotel 4 Opatijska cvijeta; destination