Returning to Hyrule Castle for another round of stealth.
In the comment section, tuankid revealed acrylic paint was used in the Hyrule map project. In addition, primer was applied to the replica to prevent the paint from peeling off the 3D-printed model.
You won't be able to return to Hyrule Castle town until after you've completed both the Gerudo Sanctum and Jabul Ruins dungeons ... the nearby Waypoint from the map to Lueberry's (it's marked ...