Niksic is a city in Montenegro. In 2003 the city had total population of 58,212.Niksic is located in Niksic plain, at the foot of Mount Trebjesa. It is the center of Niksic municipality (Population of 75,282), which is the largest municipality in Montenegro by area. Niksic is the second - largest city in Montenegro, after Podgorica, and it's an important industrial, cultural and educational centre.The city of Niksic was built in the 4th century. Its original name was Onogost. Remains of this old city are today a cultural and historic monument. Niksic is the town of rich cultural and historical heritage on whose territory are found many cultural monuments from the Illyric and Roman period. Many documents and objects from the historical development of the town are exhibited in the local Museum, which makes, together with the archive and library, part of the Center of culture.