One of Mihalović 's greatest accomplishments was the restoration of the Zagreb Cathedral . In 1874 , bishop Strossmayer , who had large estates throughout Slavonia , started collecting funds for the Cathedral reconstruction . One of the promoters of reconstitution was also Josip Stadler . Reconstruction was interrupted on 9 November 1880 by a 6.3 magnitude earthquake that struck Zagreb . Although only one person was killed in the earthquake , it destroyed or damaged many buildings , including the Cathedral . From a total of 32 altars , only 3 were kept after renovation . After the earthquake , the reconstruction of the Cathedral was conducted between 1880 and 1902 in neo-Gothic style by the architect Hermann Bollé with funds provided by Izidor Kršnjavi
6.3 magnitude earthquake
1880 Zagreb earthquake
Josip Mihalović