Walnut Tree Viaduct

This is just outside my village. When I used to come and visit my wife's family we would drive past it and I thought it had been erected especially to commemorate the Queen's Silver Jubilee. It was a rather odd tribute I thought. But later I discovered it was one of the old remaining uprights for the rather grand Walnut Tree Viaduct . This was built in 1901 to carry coal from Merthyr to Cardiff docks. In an act of historical vandalism the viaduct was destroyed in 1974.
There's also an interesting story of the relevance of the monarchy here I think: Silver Jubilee, big effort made; Golden Jubilee, "ok, we'll put up a token message"; Diamond Jubilee "Oh, you're just taking the piss now".