Tourism of cruising round trips is a set of relationships and appearances which come from cruising tourists with passenger ships for the sake of pleasure, leisure education, entertainment, relaxation, etc. This type of cruise is mostly connected with the calls of the ships in one or more ports, as in touristic destinations in which the passengers and the crew of the ship get down to the shore for a travel tour. The ship on the cruising round trips represents the floating hotel which transports the passengers from port to port, from one touristic destination to the next one and in a broad sense with larger ships; because of the diverse offer it has characteristics of a mobile destination. The goal of the cruise ship is to enjoy the sea, ocean, or river in the luxury surrounding, like in a hotel. Cruise tourism is a specific type of tourism which is classified as nautical tourism because it is based on ships and navigation but it is so much more specific that it can be considered separate from the nautical tourism. The region of Dubrovnik is characterized by the favourable position in the south of Croatian Adriatic Sea which makes it a very strategic and important part of developing the cruising tourism. Dubrovnik, according to the statistics of association of Mediterranean cruising ports takes a high fifth place in the Mediterranean Sea considering the attendance. This final work introduces us with the early beginnings of development of cruising tourism in Croatia, the situation today and it shows us why Dubrovnik is such an important strategic port for the development of this kind of tourism.