The map location is approximate, based on the position of Castle Court, off the Strand, on this 18th century map.
The overlays that highlight 17th century London features are approximate and derived from Wenceslaus Hollar’s maps:
Open location in Google Maps: 51.509544, -0.124068
Glyn • Link
The Castle was owned in 1667 by a John Cooke.
Source: “Taverns and Tokens of Pepys London” (1976) by George Berry, page 101.
At the time of Pepys' visits to the Castle tavern in 1667 I belive the landlord was Thomas Springall (or Springell). For more details of this landlord and tavern see the following link;
Chart showing the number of references in each month of the diary’s entries.