The subject of this graduate thesis is „History of Zagreb during the 20th and 21st century“. The thesis is consisted of descriptions of development of Zagreb during the 20th and 21st century in domains such as architecture, economy, culture, politics, city constructing and social life of citizens of Zagreb. Thus, life in Zagreb is represented during The State of SHS, The Banovina of Croatia, The Independent State of Croatia, Yugoslavia, and, at the end, Republic of Croatia. In the thesis you can read about functioning of Zagreb during The State of SHS, what was happening during and after the assassination of Stjepan Radić, but also, how people lived through the social colapse during the 1930-s. It's also shown how did the citizens of Zagreb accept creation of The Independent State of Croatia, how they interacted with the government, and how did they got freed. You can find the informations about development of Zagreb during Yugoslavia, how the city was restored after The Second World War and which significant institutions were built. At the end, you can find descriptions of what was happening in Zagreb during Croatian War of Independence and after the establishment of democratic Republic of Croatia.