Across Australia, the post-war era saw governments on all tiers commit to large projects related to developing the arts, including standalone and integrated landmark projects for institutions such as libraries, theatres and art galleries. Sites for such projects were often in centrally located areas, where previous uses and activities were in decline, or had become redundant. This type of urban renewal offered a blank slate for development, where the existing layout could be reconfigured and the built environment transformed. The construction of Sydney's Opera House had commenced in 1959; preliminary investigations for Adelaide Festival Centre started in 1964; the National Gallery of Australia was established in 1967; the first stage of the Victorian Arts Centre, the National Gallery of Victoria, was completed in 1969 and Perth's Civic Centre was also developed during the 1960s.