Significance of Diagon Alley

Diagon Alley is in London, a place for purchasing school supplies; such as, books, robes, wands and the usual. Diagon Alley also contains public establishments like the Leaky Cauldron, whose atmosphere is much more subdued than it had been the previous year, another reflection of the war with Voldemort. Diagon Alley is also home to Fred and George Weasleys' business: Weasleys' Wizard Wheezes. Mrs. Weasley thinks her sons have gone too far with their ad for "U-No-Poo—the constipation sensation that's gripping the nation." Romilda Vane probably purchased the love potion she intended for Harry here.