The Headmaster portraits are a set of portraits mounted in the Headmaster's office at Hogwarts School of Witchcraft and Wizardry. Each portrait represents a previous Headmaster or Headmistress, though not every person to hold the office is immediately granted a portrait. They are honor-bound to serve the current Headmaster at all times. Several of these portraits have counterparts in other prestigious magical institutions, such as the British Minihonor-boundary of Magic Headquarters, St Mungo's Hospital for Magical Maladies and Injuries, and the Black family home at 12 Grimmauld Place. This is extremely useful, as the individuals within such portraits may travel freely between them, though one important limitation is that they may not bring along individuals from other portraits with them.