Hogwarts Legacy has a huge range of side quests you can play alongside the main story. The Hippogriff Marks The Spot is one of them, and you'll require Henrietta's Map to trigger it.
Once the quest has started, this item will lead you to a hidden chamber that will require some puzzle-solving skills and a few wand clashes before it offers the reward: Treasure-Seeker's Gloves.
The Hippogriff Marks The Spot is essentially a puzzle-based treasure hunt that fans have encountered countless times across different RPGs. However, Hogwarts Legacy' environment does make it more appealing. The quest is fairly easy to complete, and here is a walkthrough to give you a head start.
Before triggering the quest, it is advised that you complete a few main quests and arm yourself with some powerful spell sets. This is because The Hippogriff Marks The Spotwill involve combat. Incendio and Glacius are two important spells to have for this quest, so make sure you unlock and equip them.
Now, to get Henrietta's map, first, find the Poidsear Castle on the map.
Set up a waypoint and travel to the location. Look for a rolled parchment atop a desk under a shed on the castle grounds. This will trigger The Hippogriff Marks The Spot side quest and also show you the location of Henrietta's Hideaway, where your treasure is located.
This is a dungeon in the Manor Cape region, which is in the southern part of Hogwarts Legacy's map. Its entrance can be found by going down the stairs towards the place's southeast side. Please refer to Henrietta's map as the entrance is marked on it as well.
As you enter the dungeon, you will find yourself in a room with two magic platforms on the ground. One will already have a cube on it. A second cube will be behind a pedestal
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