Dubrovnik and it's walled Old Town is one of the most visited and photographed destinations in all Europe. In the Middle Ages, it was known as the Republic of Ragusa, maritime state so powerful it rivaled even Venice. Like Diocletian's Palace in Split, Dubrovnik is also a UNESCO World Heritage site. Famed for its wonderful Renaissance architecture, red tile roofs and its 2 km long walls that successfully resisted the attacks of different enemies for centuries, Dubrovnik is a must-see Croatian experience.. Explore the Old Town's central pedestrian way, the Stradun; the Franciscan Monastery ( with one of the oldest pharmacies in the world), the splendid Rector's Palace the Lovrjenac Fortress and the many squares and churches of this wondrous city.