This is one of the oldest and most historically significant buildings in South Australia and has an important association with the colony’s administrative history and economic development. Managed by the National Trust of South Australia, the Adelaide Treasury Building itself has now been restored and redeveloped as a Medina Grand hotel.

The original building, designed by George Strickland Kingston was constructed in 1839, just three years after the settlement of colony.

The Medina Grand is easily accessed, situated on the corner of King William and Flinders Streets in the heart of the city.

The Treasury Building was built from 1858–79 as a result of the new prosperity brought to South Australia from the Victorian gold rush. Designed by Edward Hamilton, the Colonial Architect, the building was constructed in five stages and was later described as “A range of splendid stone buildings built in the middle of the city, having a fine but not ornamental front to the main street and comprising the Treasury and the land surveying and immigration offices. The design is in the Italian style, very chaste and handsome”. The building houses the historic South Australian Cabinet Room and courtyard garden.

It is possible to take a guided tour through the original underground tunnels of the old Adelaide Treasury Building. One can see where gold was transported, the Cabinet Room and more. The tunnels have a certain mystique, but there ar many unanswerd questions as to where the tunnels actually led, and what their purpose was.