St Mungo's Hospital for Magical Maladies and Injuries

• Type: Hospital
• Location: London, England, magically concealed behind the facade of a derelict Muggle department store, Purge and Dowse, Ltd.
• Owner/Residents: Founded by the famous Healer, Mungo Bonham. It is staffed by Healers and Mediwitches/Mediwizards. Notable long-term patients include Gilderoy Lockhart, Frank Longbottom, and Alice Longbottom.
• Key Features: The entrance is a magically enchanted mannequin that visitors must speak to; staff wear distinctive lime-green robes; the hospital's emblem is a crossed wand and bone.

St. Mungo's Hospital for Magical Maladies and Injuries is the primary medical facility for the wizarding community in Great Britain. Founded in the 17th century by the celebrated Healer Mungo Bonham, it treats a wide range of magical ailments, from spell damage to creature-induced injuries. The hospital is hidden from Muggle view in London, behind the shabby exterior of a closed-down department store named Purge and Dowse, Ltd. To gain entry, a witch or wizard must address a mannequin in the front window, which will then permit them to walk through the glass as if it were water. The reception area is often chaotic and crowded, a stark contrast to the sterile orderliness of Muggle hospitals. A “Welcome Witch” sits at a large desk to direct patients and visitors. The atmosphere is bustling, with Healers in their lime-green robes hurrying to and fro.

St. Mungo's features most prominently in Harry Potter and the Order of the Phoenix. Arthur Weasley is brought here for emergency treatment after being viciously attacked by Voldemort's snake, Nagini. During their Christmas visit to Mr. Weasley, Harry Potter, Ron Weasley, and Ginny Weasley encounter several notable individuals. They see their former Defence Against the Dark Arts teacher, Gilderoy Lockhart, who remains a permanent patient suffering from the effects of his own backfired Memory Charm. Most significantly, they witness Neville Longbottom visiting his parents, Frank Longbottom and Alice Longbottom. Frank and Alice are also permanent residents, having been tortured into insanity with the Cruciatus Curse by Death Eaters, including Bellatrix Lestrange. This encounter provides Harry with a profound understanding of Neville's tragic past and deepens the reader's insight into the true cost of the First Wizarding War. Later in the school year, Minerva McGonagall is admitted to St. Mungo's to recover after being hit with four simultaneous Stunning Spells while defending Rubeus Hagrid from Dolores Umbridge. In Harry Potter and the Half-Blood Prince, Katie Bell is treated at St. Mungo's for several months after she is cursed by a bewitched opal necklace intended for Albus Dumbledore.

St. Mungo's is organized into several floors, each dedicated to a specific category of magical malady.

• Ground Floor: Artefact Accidents: This floor handles injuries from backfiring wands, cauldron explosions, and other accidents involving magical objects. The main reception desk is also located here.
• First Floor: Creature-Induced Injuries: Treats bites, stings, burns, and other wounds inflicted by magical beasts. The Dai Llewellyn Ward, where Arthur Weasley recovered, is on this floor.
• Second Floor: Magical Bugs: This ward is for patients suffering from contagious magical illnesses, such as Dragon Pox or Vanishing Sickness.
• Third Floor: Potion and Plant Poisoning: Heals those who have been poisoned by magical plants, fungi, or incorrectly brewed potions.
• Fourth Floor: Spell Damage: This floor treats severe and often permanent injuries caused by jinxes, hexes, and curses. The Janus Thickey Ward for long-term residents is located here, housing patients like the Longbottoms and Gilderoy Lockhart.
• Fifth Floor: Visitor's Tearoom and Hospital Shop: A non-medical floor offering refreshments and gifts for visitors and patients.

• The name “St. Mungo” is a reference to the patron saint of Glasgow, Scotland, where J.K. Rowling once lived.
• The name of the front department store, Purge and Dowse, Ltd., is a pun on medical and healing-related terms. To “purge” is to cleanse or purify, and to “douse” is to apply liquid. “Dowsing” is also a form of divination often associated with finding water, a life-giving element.
• According to Pottermore, St. Mungo's was founded between 1500 and 1600. (Pottermore)
• In the film adaptation of Harry Potter and the Order of the Phoenix, the hospital's interior is depicted with a similar sense of magical chaos, and the scenes in the Janus Thickey Ward with the Longbottoms are included. (film)