This country has a topsy turvy history, not so long ago it was Yugoslavia, before that it was under the Austrian rule, and also Turkish and Hungarian governments. This constant change of control naturally affected the languages used and led to many dialects and languages being spoken.
From the tourist brochure it mentions that the street is the most colourful street of Zagreb. There is no statue of Adolf but rather one of Marija juric Zagorka, who was a champion for equal rights. Adolfo Veber Tkalčević - 11 May 1825 - Zagreb, 6 August 1889, Was a philologist, author, literary critic, a reformer of the Croatian language and a lifelong student. Tkalčević studied philosophy in his hometown Zagreb, before heading off to Budapest to study theology, and he could not stop studying so he left for Vienna, to study Slavistics. Judging by his travelling studies it would seem like he was a pioneer for academic tourism.
Adolfo was part of the Illyrian movement, which was a movement that aimed to establish a national Croatian Nationality. The attempt was to unify Croats both ethnically and linguistically. Croatia had a long literary history based on Turkish prose; the Illyrian movement moved away from this to establish a Croatian themed literature.
Adolfo wrote school textbooks and grammars for Croatian and Latin. He was the author of Skladanja Ilirskog Jezika ("Composing the Illyrian language", which he published in 1859 in Vienna. His book was the first syntax for the newly established Croatian language. A decade later his "Slovnica Hrvatska" published in 1871 served as the standard textbook for the Croatian language.
Croatia has its language preserved and unified because of the work of people such as Adolfo Tkalčević. He is also the author of a book "Put na Plitvice" I have no idea what it is about but Plitvice is a world wonder national park.