The Leaky Cauldron.

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." 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. The pub serves as a way of entering onto Diagon Alley from the Muggle London either for Muggle-borns and their Muggle 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 is tapped (found by counting three up and two across) three times.