Treasure can be found all around Hogwarts Legacy but is also quite common within Hogwarts castle itself. When players encounter another student named Arthur Plummly they’ll soon discover he’s also taken notice and wants their help solving an actual treasure map. Players will then be tasked with deciphering Arthur Plummly’s treasure map during the “Cache in the Castle” quest.
This is a side quest rather than one that is required to complete the story which means that players can freely choose whether they wish to complete it.
Here’s everything you need to know in order to solve Arthur’s treasure map in Hogwarts Legacy.
Related: How to solve the bridge puzzle in Hogwarts Legacy
Cache in the Castle treasure map solution in Hogwarts Legacy
If you want to help Arthur Plummly solve his treasure map, here’s how you can do so to get yourself a nice reward.
Solve Arthur’s treasure map: step-by-step
- Begin this quest by approaching Arthur Plummly. He can be found in The Astronomy Wing section of Hogwarts right outside of Charms class by a poster that has a bunch of charms listed on it.
- After accepting his quest, players will receive the following map which indicates where they need to go next.
- To reach this location, head all the way down the first set of stairs until you reach the floor that has a set of enchanted musical instruments that are always playing music.
- After reaching this floor, continue heading down the set of stairs located here until you find the door that is pictured below.
- Walk through this door and you’ll find yourself in the courtyard. Immediately turn left and then continue straight past the fountain, then the giant tree, and then walk through another set of doors.
- Turn right after entering the door and head up the stairs until you come across the portrait that is drawn on the treasure map.
- Once you have found this portrait, you’ll need to cast the spell that the treasure map tells you to, which is Accio. This will pull on the handle located at the top of the portrait to then reveal a hidden staircase.
- Open the chest inside to obtain your reward, which will be an Authentic Historian’s Uniform.
- Return to Arthur Plummly to finish the quest. He will be hanging around in the same area but may be at a slightly different location.
Once players return to Arthur Plummly, the quest will successfully be concluded. Players can equip their new Authentic Historian’s Uniform look by selecting the change appearance option on a different robe that they own.
Related: All Moth to the Frame puzzle locations and solutions in Hogwarts Legacy
