The Leaky Cauldron is a pub and inn for wizards, located on the Muggle street of Charing Cross Road in London, offering food, drinks and rooms to rent. It was founded by Daisy Dodderidge (1467–1555) in 1500 "to serve as a gateway between the non-wizarding world and Diagon Alley." The current barman and innkeeper is a wizard named Tom.
On the main floor, the inn has a bar, several private parlour rooms, and a large dining room for guests to dine. On the upper floors, there are a number of rooms available; Harry has stayed in Room 11,[PA Ch.4] which has a talking mirror and windows that allow him to look out onto Charing Cross Road. People often stay at The Leaky Cauldron when they come up to London on shopping trips, since there is no mention of other wizarding hotels or inns in Diagon Alley.
The pub serves as a way of entering onto Diagon Alley from the Muggle world for Muggle-borns and their parents (both of whom, until the first letter from Hogwarts, have no magical knowledge or means of entering). The rear of The Leaky Cauldron opens onto a chilly little courtyard where a brick (found by counting three up and two across) is tapped three times.