ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti wˈʌn pˈɛtɹəvˌæɹɐdˌɪn fˈɔːɹtɹəs wʌz ˈædᵻd tə spˈeɪʃəl kˈʌltʃɚɹəlhɪstˈɔːɹɪkəl jˈuːnɪts ʌv ɡɹˈeɪt ɪmpˈoːɹtəns lˈɪst ʌvðə ɹᵻpˈʌblɪk ʌv sˈɜːbiə.
In 1991 Petrovaradin Fortress was added to Spatial Cultural-Historical Units of Great Importance list of the Republic of Serbia.