The Natural History Museum keeps a woman eleven centimetres tall, carved from limestone about thirty thousand years ago. A workman found her in 1908 beside a railway cutting at Willendorf, up the Danube; she came out of the ground painted red, and an excavator washed her the same day, so almost all the colour is gone. She has a case to herself in Hall 11. The collection around her is older than the house.
It started around 1750, when the emperor Franz Stephan of Lorraine bought thirty thousand minerals and fossils from a collector in Florence, and it now holds about thirty million objects. Ferdinand von Hochstetter planned the order of the halls and died five years before it opened in 1889. Most of the halls were never restyled: cases stand in ranks, minerals sorted by chemistry, animals mounted in the stiff poses of their century. That is the pleasure and the problem, because nearly forty halls is more than one visit holds. More than sixty scientists work behind the doors.