The article presents the course of the territorial and administrative changes ongoing in Warsaw from the inter-War period to the present day. It draws upon many documents and studies from the period during which the system by which the capital city was administered changed many times, with different innovative ideas being put forward very often. Although the present shape of Warsaw is still very much based upon that set out in the Act of 18 May 1990, every new Act relating to the administrative system of Warsaw has meant major changes for the way the city is administered and functions. The modifications and transformations in question are discussed in detail in the article, along with their consequences.