Zabljak is an island fortress in Skadar Lake near the mouth of the Moraca. It is assumed that Žabljak was founded during the 10th century, while the first known written testimonies about it date from the middle of the 15th century. It was in the possession of the noble family of Crnojević, so it was named after that. At the time when Zeta was part of the Serbian despotate, this fortification was under the rule of Stefan Lazarević and later Đurđe Branković. After that, it became the capital of Crnojević, until 1478, when it was occupied by the Ottomans. Crnojevic's frog was surrounded by strong walls with towers, and it had one gate. In the town, in addition to the Crnojević court, there were: the church of Sv. George (during the Ottomans it was turned into a mosque), residential and military facilities, as well as warehouses for goods and a water tank. Zabljak was conquered and burned by the Montenegrins in the 1960s, and in 1878, by a decision of the Berlin Congress, it was returned to Montenegro. The remains of the fort can be reached from Golubovac, by land, when the water is not high.