 The City Centre is the core central activities district (CAD) of Greater Melbourne.It encompasses a number of places of significance, which include the, Federation Square, Melbourne Aquarium, Melbourne Town Hall, State Library of Victoria, State Parliament of Victoria and Supreme Court of Victoria.It is also the main terminus for the Melbourne metropolitan and Victorian regional passenger rail networks–being Flinders Street and Southern Cross stations respectively, as well as the most dense section of the Melbourne tram network.