The Croatian Music Institute was built in 1876 following the project of Janko Nikola Grahor and Franjo Klein. Besides being historically significant for the development of Zagreb's music scene and the education of young musicians, the Croatian Music Institute also bears great historical and cultural importance as a cultural monument, and a protected cultural heritage site in the Croatian Register of Cultural Property. The building of the Music Institute in 6/6a Gundulićeva Street is an important example of the historicist style of the second half of the 19th Century. The first building was erected in the neo-renaissance style of high historicism, and the adjoining building was erected in 1895 with a neo-baroque front of late historicism based on the project by Vjekoslav Šafranek and Robert Wiesner. The building underwent a couple of transformations during the three centuries, with first interventions on the building done before and after the damage caused by a huge earthquake in 1880. The architect behind these interventions was Herman Bollé, and they included a valuable painting of the great hall done by Johannes Clausen, the upgrading of the solemn staircase and the erecting of the new music school building in 1895 based on the project by the Šafranek & Wiesner company. The 1920s saw several construction works on the interior of the building following the plans by Zlatko Neumann, and in the 1970s there was constructive work of upgrading and adapting the music academy by the Arhitektonski projektni zavod’s plans. The complete renovation and reconstruction of the Music Institute began in 2021 after the damage caused by a second large earthquake in 2020. This renovation will also include the restorative and conservative works that will reveal the valuable wall painting.