The NRM is the largest museum of its kind in the world. The NRM collections are vast and diverse, ranging from an Aladdin's Cave of railway objects in the Warehouse to a superb collection of Royal carriages in the Station Hall (York's former bustling Leeman Road Goods Station). The Great Hall of the NRM largely covers numbers 3 and 4 roundhouses of the former York North Motive Power Depot. Inside you will find legendary locomotives such as the Flying Scotsman, the Duchess of Hamilton and the record-breaking Mallard and an original turntable which is demonstrated twice daily.