The building was designed in 1857 by a 19-year-old architect, explains The Culture Trip. John James Clark was also responsible for designing the City Baths, Supreme Court, and Royal Mint. The Old Treasury Building was “financed by wealth sourced from the Victorian Gold Rush between 1852 to 1862” and constructed using local bluestone and sandstone -- it’s a “primary example of Australian Renaissance Revival architecture, featuring Italian palazzo details.” Completed in 1862, it “housed gold vaults which held gold bullion and was home to the Treasury Department of the Government of Victoria.” Today it houses the offices of Victorian politicians and leaders including the Governor, the Premier, the Treasurer and the Auditor General.