Here in the main hall of the Natural History Museum in London is a cast of a diplodocus skeleton. Known as Dippy, it's been on this spot since 1979, but was actually originally gifted to the museum in 1905 by Andrew Carnegie.
Last year the museum announced that Dippy is going to be replaced by a giant blue whale instead, and Dippy will be going out on tour to venues around the UK. So there's not long left to see it here.
Even among all the great attractions in this part of London, this museum is one of the best. I was here with my daughters recently, and although they did like the dinosaurs bit, the earthquake simulator upstairs was probably their favourite.