This thesis examines the raison d’etre of the Australian Senate, the upper house of the Australian bicameral parliament, established in 1901. It explores the literature that might have influenced its establishment and structure, and the attitudes, ideals, experience and expectations of the men (and they were all men) who initiated its existence and designed its structure during the Federation Conventions of the 1890s. It goes on to study whether similar western and British influenced institutions were seen as models by the designers of the Senate, followed by an examination of its architecture, decor, and procedures, to determine the major influences at work on these aspects of the institution. The study was undertaken in view of the paucity of studies of the history and role of the Senate in relation to its powerful influence on the Government of Australia. Its structure can allow a minority of Senators to subvert or obstruct key measures passed by the lower house and is a serious issue for Governments in considering legislation. Answers are sought to the questions of how and why it was conceived and created and what role it was expected to play. The study does not extend beyond 1901 when the Senate was established except to examine the Provisional Parliament House, opened in 1927, which realised the vision of the Convention delegates who determined that the Senate was the house we had to have. …