Dubrovnik is a Croatian city that can be found in the Adriatic Sea. Dubrovnik is well known for being a tourist destination because of all the maritime trade the city receives. The city has ancient medieval walls, which were originally meant for protection, making the city look partially like a fortress. It has many rocky cliffs, so both novice and veteran climbers have plenty of places to explore. Dubrovnik is considered by many historians to be one of the best preserved ancient medieval cities in the world.