The Georgian town house which the museum occupies as "221B Baker Street" was built in 1815. It was formerly used as a boarding house from 1860 to 1936. It covers the period of 1881 to 1904 when the stories describe Sherlock Holmes and Doctor Watson residing there as tenants of Mrs Hudson. The house is listed Grade 2 by the Government because of its special architectural and historical features. The museum features exhibits items from several different adaptations of Sherlock Holmes, and recreations of scenes from the 1984 Granada Television series "Sherlock Holmes".