▁a ▁priv ately ▁run ▁museum ▁in ▁London , ▁England , ▁dedicated ▁to ▁the ▁famous ▁fict ional ▁detect ive ▁Sher lock ▁Hol mes . ▁It ▁is ▁the ▁world ' s ▁first ▁museum ▁dedicated ▁to ▁the ▁literary ▁character ▁Sher lock ▁Hol mes . ▁It ▁opened ▁in ▁ 1 9 9 0 ▁and ▁is ▁situated ▁in ▁Baker ▁Street , ▁bearing ▁the ▁number ▁ 2 2 1 B ▁by ▁permission ▁of ▁the ▁City ▁of ▁West min ster , ▁although ▁it ▁lies ▁between ▁numbers ▁ 2 3 7 ▁and ▁ 2 4 1 , ▁near ▁the ▁north ▁end ▁of ▁Baker ▁Street ▁in ▁central ▁London ▁close ▁to ▁Reg ent ' s ▁Park . ▁ ▁The ▁Georg ian ▁town ▁house ▁which ▁the ▁museum ▁occup ies ▁as ▁" 2 2 1 B ▁Baker ▁Street " ▁was ▁built ▁in ▁ 1 8 1 5 ▁and ▁was ▁formerly ▁used ▁as ▁a ▁board ing ▁house ▁from ▁ 1 8 6 0 ▁to ▁ 1 9 3 6 , ▁and ▁covers ▁the ▁period ▁of ▁ 1 8 8 1 ▁to ▁ 1 9 0 4 ▁when ▁the ▁stories ▁describe ▁Sher lock ▁Hol mes ▁and ▁Doctor ▁Watson ▁res iding ▁there ▁as ▁ten ants ▁of ▁Mrs ▁Hudson . ▁ ▁The ▁house ▁is ▁listed ▁Gra de ▁ 2 ▁by ▁the ▁Government ▁because ▁of ▁its ▁special ▁architect ural ▁and ▁historical ▁features . ▁The ▁museum ▁features ▁exhib its ▁items ▁from ▁several ▁different ▁adapt ations ▁of ▁Sher lock ▁Hol mes , ▁and ▁recre ations ▁of ▁scenes ▁from ▁the ▁ 1 9 8 4 ▁Gran ada ▁Television ▁series ▁Sher lock ▁Hol mes