<P> Usually, there is a display of gold - embossed spell books the size of paving slabs in the window, but in Prisoner of Azkaban, the front window holds an iron cage filled with hundreds of copies of The Monster Book of Monsters . To deal with the vicious books, set for the third year Care of Magical Creatures class by Hagrid, the harassed manager had to gear up with thick gloves and jab at them with a knobbly walking stick, as the books tended to rip each other apart . The manager says that he had thought he had seen the worst when they bought 200 copies of The Invisible Book of Invisibility, which were promptly misplaced . </P> <P> In Chamber of Secrets, celebrity author Gilderoy Lockhart signs copies of his autobiography, Magical Me, at the shop the day Harry buys his second year school books . The signing drew a huge crowd of fans (mostly middle - aged women). This is also where Lucius Malfoy slips Tom Riddle's diary into Ginny's battered old Transfiguration book, thus causing the start of the events in Chamber of Secrets . </P> <P> Gambol and Japes is a wizarding joke shop . It is briefly mentioned in Chamber of Secrets, where Fred, George and Lee Jordan stock up on "Dr Filibuster's Fabulous Wet - Start, No - Heat Fireworks ." </P> <P> Gringotts Wizarding Bank is the only known bank of the wizarding world and it is operated primarily by goblins . A snowy white building, near the intersection of Knockturn Alley and Diagon Alley, Gringotts towers over all neighbouring shops . Customers pass through a set of bronze doors and then silver ones before entering the lobby . The main floor is paved with marble and has long counters stretching along its length . Within, wizards and witches keep their money and other valuables in vaults that are protected by very complex and very strong security measures . The vaults extend for miles under London and are accessible through rough stone passageways navigated by magic carts that travel speedily along their tracks . Gringotts also offers Muggle - Wizarding currency exchange . </P>

Where do the wizards live in harry potter