The King of Bohemia met Irene Adler in Warsaw. (A Scandal in Bohemia)

 

Holmes arranges for Inspector Athelney Jones to meet him at the Stairs so that they can board a Police Steam Launch. (The Sign of Four)

 

There was a disturbance at the tavern earlier in the evening prior to the murder of Enoch J. Drebber. PC John Rance was called to the tavern but the disturbance quickly calmed down. (A Study in Scarlet)

 

This post-office is on the corner of Wigmore Street and Baker Street just behind Selfridges (Oxford Street). Holmes deduced that Watson had been there to dispatch a telegram by the earth on his shoes. (The Sign of Four)