Out of doors Melbourne lives on its streets&mdashthere are impromptu performances around fountains, open-air concerts, a lively arts scene, and much sport. Soak it all in on a stroll down the Yarra riverfront, the Southbank precinct, and round the Royal Botanic Gardens. Or get to the centre of it all&mdashthe postmodern Federation Square, once a hugely controversial project, now a much applauded city plaza that &lsquohangs&rsquo over Melbourne&rsquos rail lines. The construction of the deck beneath the square is the largest expanse of railway decking in Australia. It is supported by over 3,000 tonnes of steel beams, 1.4 kilometres of concrete &lsquocrash walls&rsquo and over 4,000 vibration-absorbing spring coils and rubber padding. The deck supports art galleries, cinemas, radio and TV studios, restaurants, etc. See www.federationsquare.com.au. The architectural legacy of the gold rush remains in imposing Victorian façades and splendidly restored terrace houses. Interesting reuse of historic buildings is exemplified in the GPO and the Queen Victoria hospital, both upmarket shopping complexes now.