Prestigious and imposing; the original home of the noble and most ancient house of Black. Relatives of the highest influence and power often visit. Inherited by Julius and Violetta Black. Impenetrable, unless by invite.
Saint Mungo's Hospital for Magical Maladies and Injuries is located at a department store with a "closed for refurbishment" sign over the door. Speak with the dummy in the window and you can walk through.