Sherlock Holmes Museum at 221b Baker Street:

The Sherlock Holmes Museum at 221b Baker Street is the official home of Sherlock Holmes and John H. Watson, although the address didn’t formally come into existence until 1990. Well worth a visit if you’re in London. The gift shop is very nice and I treasure my photograph of the sitting room, with the picture of Gordon and the slipper and the jack-knifed correspondence.