What does 221b Baker Street mean?

The "b" of 221b is not the English letter "b", but the meaning of BIS (~ 2) in French, and the address of 221 is a symbol indicating that there are two families.

Baker Street 221b is a nonexistent address (at that time, Baker Street had No.1-No.42 from south to north on the east and No.44-No.85 from north to south on the west, and there was no 221st). However, this address was set as the residence of Sherlock Holmes, the hero of the novel, and the address of the detective office in the detective novel Sherlock Holmes written by British writer Conan Doyle. At present, 221b Baker Street is a financial company (ABBY NATIONAL), and Sherlock Holmes' residence is built in the adjacent place.

Sherlock Holmes Museum

Baker Street, 221B on the right (the real number is No.239) is the Sherlock Holmes Museum. This exquisite and charming sightseeing place, which opened in 199, looks like a film shooting scene; Dustin hoffman and his family were indeed famous visitors here. The offices of Dr. Holmes and Dr. John H. Watson have been redecorated according to the story. You can sit by the fire in the study on the first floor, try on the famous Sherlock Holmes hat and hold his pipe.