We had a four day long weekend last week and so I was hard at work every day. Mostly it is just cardboard. The aluminium rings were built in the craft shop, as well as the black wire. The handrail was made with layers of cardboard and then smoothed out with Milliput. To get the mahagoni paint I mixed black, brown and red.
It does not look exactly like the original, it would have to be much bigger to be in scale. I simplified the layout. See some in between pictures behind the cut: