The Sherlock Holmes Museum is a privately run museum in London, England, dedicated to the famous fictional detective Sherlock Holmes. It is the world's first museum dedicated to the literary character Sherlock Holmes. It opened in 1990 and is situated on Baker Street, bearing the number 221B by permission of the City of Westminster, although it lies between numbers 237 and 241, near the north end of Baker Street in central London close to Regent's Park.