Niš
Niš is a city in Serbia located at 43.3 ° N 21.9 ° E, on the edge of the Nišava River. With a population of 260,237 the city is the largest city in South Serbia and the third largest city in Serbia after Belgrade and Novi Sad. The city's width is about 597 km2, including the city of Niš itself, Niška Banja spa and 68 suburbs. '' Niš Constantine the Great Airport '' is an international airport in Niš with the destination codes INI. Niš is the administrative center of the Nišava District in Serbia. Located at the intersection of the Balkans and major European roads, connecting Minor Asia to Europe, Niš is one of the oldest towns in the Balkans, and has since been regarded as a gate between the East and the West. Niš is home to Serbia's oldest churches dating back to the 4th century in the Mediana suburbs. Niš is also known as the birthplace of Constantine the Great, the Roman Emperor of the first Christian and the founder of Constantinople. It is also the home of two other Roman emperors, namely Constantius III and Justin I. Niš is a university center.