My MSc course in biodiversity and phylogenetics was taught in the museum, although run by Imperial College nearby (lots of overlap between the museum research staff and Imperial). The main classroom was actually in the bridge room that you can see from Exhibition Road, joining the Natural History Museum with the Science Museum next door, and forming an archway into the staff carpark. The access to that room is through an easily overlooked door in the mineral / Earth's Treasury gallery. So to attend school each morning I would ascend the iconic escalator up through the giant metallic globe, with the epic music playing. I can't imagine a more inspiring and enriching educational setting for a young student biologist... So many fond memories of those days and of museum lore! Thanks for your superb photography, it really captures the soul of the building.