Nis, one of the oldest towns in the Balkans, on the crossroads connecting Europe with the Middle East, has been called the gate of the East and the West from time immemorial. The town was named after the Nisava river, on the bank of which it was built. The oldest preserved artifacts which can point to the time of its exact origin date from 4000 BC and are exhibited in the Archaeological Museum in Nis. Historians call it the town of emperors, as it was the birthplace of Constantine the Great, per…