Purge and Dowse, Ltd was a department store located in London. While outwardly appearing to be a red brick Muggle clothing store under renovation, the dilapidated building actually disguised the entrance to St Mungo's Hospital for Magical Maladies and Injuries.
Entrance to St Mungo's
Entrance to St Mungo's was achieved by speaking to a mannequin in one of the shop windows and stating your reason for wishing entry. Once the mannequin nodded its assent, the people who wish entry walked through the window and into the reception area of St Mungo's. The theory behind using this building for the entrance to St Mungo's was that injured witches and wizards could simply blend with the Muggle crowd on their way to the hospital.
- Harry Potter and the Order of the Phoenix (First appearance)
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