Roman Catholic Parish Church of “The Name of Mary” takes significant place at the Square of Liberty. Petrovaradin Fortress is a significant, well-preserved, 17th century fortification above the Danube. Old core of the city includes historical monuments, city hall, theatre, churches and Synagogue. See More National Park Fruška gora includes protected landscapes, rare plants and animals and forest units. Serbian National Theatre in the city center offers regular repertoire of drama, opera and ballet. Gallery of Matica Srpska holds one of the most valuable art collections of Serbian history. See Less