The Sydney Mint, located on Macquarie Street in Sydney's city centre, is Sydney's oldest public building. The public building was built in 1811-1816 and is now the headquarters of the New South Wales Old Building Trust. A portion of the building is free for public visits, showing the history of the public building and the stone pillars, stone monuments and other relics left by the old Greek architecture. The opening range is small and it takes less than half an hour to see.