The Goulburn Locomotive Roundhouse is the largest heritage based operating roundhouse in NSW and displays the historic transition from steam to diesel operation. A range of locomotives and items of rolling stock are exhibited. Additionally thee are other items of heritage machinery and equipment relevant to the Centre's history. A significant part of the town's history, the original 42 road circular shed within its 90-foot turntable continues to operate today. The Roundhouse comprises a fascinating workshop complete with a large wheel lathe, machine shop, sheet metal shop and blacksmiths forge. Numerous machines have been returned to working order.