There's something about this particular era of games where the developers would make a giant castle/courtyard you can fly around that is completely empty of content. Like maybe 5% of it is interactable. It rules.

There's this balance between player convenience and realism in scale. Like you don't want the player to have to travel a long distance to get from one "fun" to the next "fun" so you abstract the scale and distance between the "funs". In the FF7 overworld, Cloud becomes a big cartoon boy and hypothetically is traveling very large distances with his thundering abstracted steps. The trade-off here being that you lose a little immersion, a little realism not in graphics but in scale. Games as an interactive medium promise worlds you can live in and can get a lot out of that scale if your willing to inconvenience the player a little. You've got to find the right balance.

The castle/courtyard in this game doesn't have much in it but the sheer act of existing on the Hogwarts campus at full scale is fun.