Items of interest:

This hallway is simply cool.  There is a closet off the hallway for storage.  Guests have a heck of a time finding the right door to go upstairs.

At one point, Fowler considered putting back up the front two doors simply for the coolness factor (the doors are stored in the back bedroom of the basement.)

Items can quickly be moved from the front street to the back yard through this hallway.  On occasion the hallway gets "borrowed" for that purpose.