"The Science Museum on Exhibition Road, South Kensington, London is part of the National Museum of Science and Industry.
The Science Museum now holds a collection of over 300,000 items, including such famous items as Stephenson's Rocket, Puffing Billy (the oldest surviving steam locomotive), the first jet engine, a reconstruction of Francis Crick and James Watson's model of DNA, some of the earliest remaining steam engines, and a working example of Charles Babbage's Difference engine."