How to get in:
In order to get into Diagon Alley, all you have to do is to go into the back of the pub The Leaky Cauldron and tap the third brick up second across three times with your wand.
Stores in Diagon Alley:
The Cauldron Shoppe: This shop sells potions of all different shapes and sizes.
Daily Prophet Office: An office that the wizarding newspaper the Daily Prophet has in Diagon Alley.
Eeylops Owl Emporium: An owl shop that is in Diagon Alley. This is where Hagrid bought Harry Hedwig in Book 1.
Florean Fortescue’s Ice Cream Parlor: An ice cream parlor in Diagon Alley. In Book 3, Fortescue gave Harry free sundaes every hour. He disappeared in Book 6, and by the looks of it he was dragged off (probably by Death Eaters) at the beginning of the 2nd wizarding war.
Flourish and Blotts: The book store in Diagon Alley. This is the shop where they sold The Monster Book of Monsters, and where Lockhart did signings in Book 2.
Gambol and Japes: A wizarding joke shop that sells Dr. Filibuster’s fire works.
Gringotts Wizarding Bank: A large bank that is run by Goblins. This is where more witches and wizards keep their money.
Junk Shop: A shop that sells all kinds of junk; such as broken wands and a book called Prefects who Gained Power (which definitely caught Percy’s eye).
The Leaky Cauldron: The leaky cauldron is the pub that links Diagon alley to the muggle world outside. On the outside on the muggle street, it appears as a normal pub. Once inside, wizards can rent room, and eat and drink in the pub. They also have a fireplace for people to use floo powder to arrive at Diagon Alley. At the back of the restaurant (outside) there is a brick wall, which is the entrance to Diagon Alley.
Madam Malkin’s Robes for All Occasions: A robe shop that sells all different kinds of robes; including Hogwarts robes. Harry, Ron, and Hermione go in here in Book 6 to buy robes, and see Draco Malfoy in here as well.
Magical Menagerie: A magical pets shop in Diagon Alley. This is where Hermione buys her cat; Crookshanks in Book 3. Ron also takes Scabbers here to get some pet tonic. At this shop, they sell toads, cats, ravens, snails, tortoises, rabbits, puffskeins, and rats. (also the name of this fantabulous site!)
Obscurus Books: A publishing company that is in Diagon Alley. It published Fantastic Beasts and Where to find them. Located at 18 Diagon Alley.
Ollivander’s: The wand shop of the best wandmaker in Britain, Ollivander. Here, they have just about every kind of wand that you can think of. Ollivander disappears in Book 6, at the beginning of the 2nd wizarding war.
Quality Quidditch Supplies: The quidditch store in Diagon Alley. This is where Harry sees the Firebolt in Book 3.
Scribbulus Everchanging Inks: A store that sells quills and ink in Diagon Alley.
Second Hand Robe Shop: A shop in Diagon Alley that sells second-hand robes. Mrs. Weasley takes Ginny here in Book 2 to get her robes for Hogwarts.
Slug & Jiggers Apothecary: A potions shop that sells potions ingredients.
Terrortours: Advertiser in Diagon Alley. They often advertise adventurous tours.
Twillfit and Tatting’s: Another robe shop that Narcissa Malfoy says that she and Draco should go to instead of Madam Malkin’s robes for all occasions. (Note: It is not said whether or not this is in Diagon Alley)
Weasleys’ Wizarding Wheezes: #93 Diagon Alley. This is the joke shop of Fred and George Weasley. They sell many things; such as toys, funny pets, and many other great things (such as chews that can get you out of class!).
Whizzhard Books: A publishing company in Diagon Alley that published Quidditch Through the Ages. It is located at 129b Diagon Alley
Knockturn Alley is an alley off of Diagon Alley. It is full of shops for the dark arts, as well as other strange things.
Stores in Knockturn Alley:
Borgin & Burkes: Founded by Borgin and Caractacus Burke it is the largest shop in Knockturn Alley. It sells a variety of dark arts items, some of them are very dangerous and can kill. Mr. Borgin (and maybe Burke?) now owns the store and he also buys items from people as we see him do in Chamber of Secrets with Mr. Malfoy. Tom Riddle (Lord Voldemort) used to work for Borgin and got many valuble items for the shop, such as a cup that belonged to Helga Hufflepuff and a locket that was Salazar Slytherin’s.
Hogsmeade is the only purely wizarding village in all of Britain. It has many shops, houses, and even a few pubs. It is located very near Hogwarts, and the Hogwarts students walk to Hogsmeade on the visiting weekends. Hogwarts also uses its train station to drop off their students. The first years take the boats to the castle, where the other years take carriages pulled by thestrals.
Stores in Hogsmeade:
Dervish & Banges: Shop that sells/repairs magical equipment.
Gladrags Wizardwear: Just as it says, you buy clothes here
The Hog’s Head: A small inn in Hogsmeade, on a side street off the main street. The bar is a small, dirty room. Students (everyone really) are advised to bring their own glasses if they choose to go in here. Hagrid won Norbert’s egg in the Hog’s Head. It was the headquarters of the 1612 goblin rebellion. When the trio was forming the DA they had their first informal meeting in the Hog’s Head.
Hogsmeade Station: The station, where the Hogwarts Express stops and students either ride boats to the castle or ride thestral-driven carridges to the school.
Honeydukes Sweetshop: Sweetshop, owned by Ambrosius Flume and his wife, (they live over the shop). The shop is also an entrance to one of the secret tunnels from Hogwarts, it is in the cellar under a trap door. Honeydukes sells a wide variety of sweets and they also make their own fudge and chocolate.
Madame Puddifoot’s: A small tea shop with circular tables. It is on a side street off the High Street. It is mostly visited by couples who drink their tea at the small tables. Cho and Harry have their first, and only date here
Post Office: Filled with hundreds of owls of all different sizes that will send your mail anywhere you need it to go. They are color coded and are sorted by how fast they fly.
Scrivenshaft’s Quill Shop: A shop for quills and stationary.
The Shrieking Shack: It is said to be the most haunted building in Britain. But later we find out that it was actually Lupin when he turned into a werewolf that was making all the noise that people thought were ghosts.
The Three Broomsticks: A bar where you can buy anything from gillywater to butterbeer. Owned by Madam Rosmerta.
Zonko’s Joke Shop: Zonko’s carries all kinds of joke products. Such as Dungbombs, Hiccup Sweets, Frog Spawn Soap, and Nose-Biting Teacups. During the dark time during book 6, Zonko’s closed and was boarded up. Fred and Georgemight buy the building and turn it into a Weasleys’ Wizard Wheezes.