25 Wizarding World of Harry Potter Hacks You Need to Know Before Going

If you dial 62442 (MAGIC) in the phone booth in Muggle London, you can get the Ministry itself on the line.

When you're in muggle London, you can climb the stairs of 12 Grimmauld Place, but make sure you keep an eye on the upstairs windows — Kreacher can be caught peeking out periodically.

In addition to Firewhisky (which is a warm, cinnamon delight that goes down easy!), the dodgy Hog's Head pub also offers several Butterbeer options and a special red ale that comes from a beer tap with an awesome hog's head. The Hog's Head Brew is made exclusively for Universal — so make sure to get it while you're in Hogsmeade while you can!

You won't find Moaning Myrtle in her usual haunt at Hogwarts Castle. Instead, she wails her laments while you're using the "public conveniences" in downtown Hogsmeade.

The only missing Horcruxes are Helga Hufflepuff's cup and Harry himself. The locket, ring, Tom Riddle's diary, a stuffed Nagini, and even Rowena Ravenclaw's bedazzled diadem are for sale.

In the Summer before his third year at Hogwarts, Harry spent several weeks staying in Diagon Alley at the Leaky Cauldron. Florean Fortescue would give Harry ice cream sundaes every half hour while he studied, and you can get one at the shop, too!

To truly get the full experience of both Hogsmeade and Diagon Alley, you need to be armed with an interactive wand (ideally the one that chooses you if you get picked at Ollivander's!). There are gold plates throughout the park with the spell name and wand motion for casting it — the results are magical, literally.

Stan Shunpike is there to greet you at the Knight Bus in Muggle London, and Dre Head isn't just for show. He can interact, answer questions, and make jokes — all specific to the person he's talking to!

At first, it appears that he is just tipping his hat and wriggling his eyebrows, but if you watch carefully, you'll see that periodically a rabbit pops out of the hat, then disappears again.

When you're on the way to Platform 9 3/4, don't miss the perfume ad that is almost straight out of one of the opening scenes in Harry Potter and the Half Blood Prince.

Make sure you stick around Diagon Alley long enough to catch an incredible re-creation of "The Tale of the Three Brothers" (really — it's amazing!) or a performance by renowned singing witch Celestina Warbeck.

When casting the Aquamenti spell to get the small fountain in front of the mermaid to spout water — watch out! While the frog fountain does indeed offer a reasonable amount of water, the spell also makes a large stream come crashing down on the spell caster unless they hop out of the way quickly enough.

Throughout Harry Potter and the Half Blood Prince, Malfoy is hard at work attempting to fix the Vanishing Cabinet in the Room of Requirement — the cabinet that has a match in Borgin and Burkes. One of his tests is to send a bird to the shop, and if you listen closely to the cabinet, you can hear a subtle chirping.

While you're trying on your Hogwarts robes, you can expect to hear some quips and comments from the mirror in the robe shop.

The trip through the bank and up to the ride itself can vary — you'll either be led up a winding staircase to your destination or will pass Bill Weasley's meeting with a goblin on the way to a very realistic lift ride before you go on quite the adventure through the vaults.

If you dare to walk down Knockturn Alley, you'll notice that the temperature drops significantly, and that the sky changes from day to night, with ominous clouds rolling overheard as you traverse the uneven cobbled path.

The Quality Quidditch Supplies store keeps the Quidditch trophies from the movies on the top shelves, and the luggage in the Leaky Cauldron is from the set of the films.

One of our favorite spells in all of Diagon Alley is easily missed because it's hidden down darkened Knockturn Alley. But don't miss the dancing skeleton spell that makes a seemingly stationary skeleton projection come to life and mimic your own movements.

The Owl Post's owls move and make realistic noises, a Boggart rattles in a trunk in Borgin and Burkes, shadows move behind the windows of shops in Knockturn Alley, and wizards' names are carved over the fireplace in the Hog's Head. While all these are tiny details (and there are countless more just like them), each one adds to the overall experience significantly. You could easily spend an entire day seeking out all of the subtleties — we did, and it was amazing!