Krajina in 1788–91, and again from 1804–13, during the First Serbian Uprising. Afterwards, it fell back under Ottoman control until 1867 when it, along with Kalemegdan and other towns in Serbia, was given to Knez Mihailo of Serbia. From the late 19th century into the early mid-20th century, bloodsucking flies sometimes referred to as "Golubac mosquitoes" thrived in the area. They were particularly dangerous to livestock, some years killing off entire herds of cattle. After World War I, a road was constructed that went through both of the fort's portcullises. This road is the shortest link between Serbia and eastern parts of the Balkan peninsula. Between 1964–72, a hydroelectric dam was built in the Iron Gate gorge, significantly elevating the river's water level. As a result, the lower edge of the slope and corresponding parts of the fortress are now flooded. From the beginning of the 21st century, much of the fort has been overgrown, making most of the sections higher on the hill inaccessible. During the spring of 2005, a public project to restore the fort was started. Most of the plants were removed and certain parts, like the fountain in the moat raised in honour of knight Zawisza Czarny, were repaired. The walls, towers and stone stairs are in good condition, but the wooden floors and steps have rotted out, making most of the upper floors impassable. Golubac has also gained popularity as a tourist attraction. Two key reasons are the major road that passes through it, and its proximity to Lepenski Vir, making the two locales a touristic whole. Architecture Golubac consists of three main compounds guarded by 9 towers, 2 portcullises and a palace, all connected by fortress walls thick. In front of the fortress, the forward wall (I) doubled as the outer wall of the moat, which connected to the Danube and was likely filled with water. A settlement for common people was situated in front of the wall. As is the case with many fortresses, Golubac's structure was modified over time. For years, there were only five towers. Later, four more were added. The towers were all built as squares, a sign of the fortress' age, showing that battles were still fought with cold steel. Once firearms came into use, the Turks fortified the western towers with cannon ports and polygonal or cylindrical reinforcements up to thick. After the Hungarian raid in 1481, they