In Hogwarts Legacy, players can find the Cache in the Castle quest treasure by locating the painting of a snow-covered house in the North Hall in the Bell Tower Wing in Hogwarts.
However, to access it, you must first pass the rhino skeleton in the Dark Arts Tower and then the fountain and large tree in the Transfiguration Courtyard.
Fortunately, Cache in the Castle is just one of the many side quests available in Hogwarts Legacy. Some of the others offer even greater rewards.
Of course, if you want a comprehensive breakdown of how to complete this treasure-hunting quest in Hogwarts Legacy, keep reading.

Cache in the Castle Quest Guide Hogwarts Legacy
You get the Cache in the Castle quest from Arthur Plummly, who can be found outside the Charms classroom in The Astronomy Wing.
He will give you a treasure map that will guide you to a painting located in the North Hall in the Bell Tower Wing. You need to use Accio on the painting to reveal the treasure inside.
This is not the only treasure map quest in Hogwarts Legacy. Fans may also want to know where you can find the Ghost of Our Love treasure location.

Here is a full breakdown of how to complete the Cache in the Castle quest in Hogwarts Legacy:
- First, locate Arthur Plummly outside the Charms classroom in The Astronomy Wing.
- You can find him easily by fast traveling to the Charms Classroom Floo Flame and heading down the stairs towards the statue. Arthur Plummly is to the left of the statue.
- Once you’ve accepted the quest, you’ll receive a map directing you to a painting.
- Head all the way down the stairs near where you met Arthur Plummly until you reach the floor with the musical instruments playing.
- Head towards the musical instruments and then turn left. Head down the staircase until you reach the Rhinosourus skeleton.
- Turn right at the skeleton and head down the stairs until you reach a door.
- Go through the double doors. You’ll now be in the Transfiguration Courtyard.
- Next, head left past the fountain and large tree until you reach another set of double doors.
- Go through the doors and head up the stairs.
- Turn right and go up the staircase until you reach the painting of a snow-covered house.
- Use Accio to open the painting and reveal the chest behind it.
- Loot the chest and then head back to Arthur Plummly.
- You’ll locate him by the Charms Classroom again.

It is crucial that you do this quest in this specific order. If you rush to the painting without passing the rhino skeleton and fountain, you will be unable to open the painting.
However, if you do it in the right order, you will unlock the Authentic Historian’s Uniform outfit, which can be equipped using Hogwarts Legacy’s transmog system.
