THE MUSEUM OF NOVI SAD is located in several places. The main building is at Petrovaradin fortress and it offers two constant exhibitions ’’The fortress in the past’’ and ‘’Novi Sad from 18th to 20th century’’. Also, there are city museums in Dunavska Street in Novi Sad, in Sremski Karlovci, in Sremska Kamenica where visitors can learn many facts about Novi Sad and its history, culture, religion, ways of living, multi-confessional society and see some of 50 000 exhibits. It is possible to walk through the corridors and subterranean military galleries which are reorganized for special tours but necessary with guides.