Exploring the expansive castle in Hogwarts Legacy often rewards players with hidden secrets, side quests, and intriguing treasure hunts. One of the earliest visual puzzles players encounter inside the Astronomy Wing comes from Arthur Plummly, a fellow student who shares a sketched map containing distinct landmarks. Completing this quest not only reveals a secret passage within the castle walls but also awards a unique cosmetic outfit for your collection.
How to Start the Cache in the Castle Quest
To begin this treasure hunt, players need to fast travel to the Charms Classroom Floo Flame located within the Astronomy Wing. Nearby, you will find Arthur Plummly inspecting a mysterious piece of parchment detailing three specific visual clues. Speaking with Arthur initiates the side quest titled Cache in the Castle and adds the treasure map directly into your inventory.
Locating the Landmarks inside Hogwarts
The first landmark shown on Arthur's map is a massive rhinoceros skeleton situated down the staircase in the Defence Against the Dark Arts Tower. After checking off the skeleton, head further down and step outside into the Transfiguration Courtyard to find the second landmark, a large dragon statue fountain. From the fountain, proceed through the double doors straight ahead and head up the nearby staircase to locate the final clue.
Solving the Painting Puzzle with Accio
At the top of the stairs, you will discover a painting depicting a snow-covered landscape that matches the final illustration on the map. To solve the puzzle, target the top handle of the painting frame and cast the Accio spell. The canvas will pull forward to reveal a hidden doorway concealing a treasure chest containing the Authentic Historians Uniform.
Returning to Arthur Plummly for Your Reward
After opening the chest and collecting your gear reward, make your way back to the Astronomy Wing where you first met Arthur. Report your findings to complete the Cache in the Castle quest and earn experience points towards your character progression. Following visual treasure maps like this offers an enjoyable way to discover the intricate details hidden throughout Hogwarts Castle.
