After the 1880 Zagreb earthquake , up to the 1914 outbreak of World War I , development flourished and the town received the characteristic layout which it has today . The first horse-drawn tram was used in 1891 . The construction of the railway lines enabled the old suburbs to merge gradually into Donji Grad , characterised by a regular block pattern that prevails in Central European cities . This bustling core hosts many imposing buildings , monuments , and parks as well as a multitude of museums , theatres and cinemas . An electric power plant was built in 1907
1880 Zagreb earthquake
1880 Zagreb earthquake
Zagreb