South Australia differed from other Australian colonies by planning a library for public use even before settlement. Its object was 'the cultivation and diffusion of useful knowledge throughout the colony'.

Today, the library also incorporates a more modern aspect to its design, however the original building still retains its vast collection of books and interior furnishings.

The iconic Mortlock Chamber, is an excellent example of a late Victorian Library and is an exhibition showcase, displaying the rich heritage of South Australia. It is often utilised for formal dinners, wedding receptions, cocktail parties and product launches.

The book-lined, Circulating Library is a gracious, historically significant room fronting onto North Terrace. It is an ideal venue for private dinner parties, small cocktail parties and product launches.

The most recent addition, a glass paned frontage to the library, allows for natural light to bathe the building during the day and incorporates a cafe for vistors to have lunch, a cup of coffee or to relax, and people watch.