I’ve spent the last couple of days researching Diagon Alley. The result is a greatly expanded page of details about the shops there and also a map of Diagon and Knockturn Alleys. The map is of course not technically canon, but it does follow the clues given in the books very exactly. For example, since in SS5 Hagrid travels from the Leaky Cauldron to Madam Malkin’s and when he gets there he has two ice creams in his hands, I made sure there is an ice cream parlor between the two. Shops that are described as smaller I made smaller. I added shops that are mentioned but not named (e.g. the stationery shop where they buy ink, quills, and parchment, which is mentioned as being next door to Quality Quidditch Supplies. All the most well-known shops seemed to be on the Leaky Cauldron end of Diagon Alley when I plotted them all out, so I made the far end a bit on the shabby side, with the junk shop, the second-hand robe shop, and Ollivander’s way down there. All this research still doesn’t make it canon, but it makes for a darned interesting map, in my opinion.