I really, really hope this hasn't been posted yet, and if it has, I apologize profusely! I don't aim to take credit for something someone else found ^^;. I did check the boards, etc., found nothing, so here goes anyway...
(this is somewhat verbatim from my original post)
Load SI with the cheat mode activated and teleport to 0x947,0x0A8 (from what I've gathered, no teleport in SI Exult yet? I used U79x for this, so...).
Ooh, a telescope in the mountains! It's not very convincing because you can see the black void surrounding the mountains if you walk around. Disregard that for the time being (nobody ever said SI was a big-budget game) and peek into the telescope. Whatever it points to seems to be arbitrary- I've seen the nude sunbather near Moonshade, a drawbridge in Furnace and some lovely *fountains and trees in Monitor* (HINT)...
Go down the stairs behind the telescope and you'll end up in what looks like an abandoned classroom or office. The light sources are all spent and it's empty, but there is a Magic 8-ball on the desk to play around with. Whee.
Going down another floor reveals what looks like some sort of dungeon (perhaps this is where Fedabiblio keeps Andrio and Freli when they start acting up during lectures?). The winch by the stairs doesn't seem to work.
There's another down staircase. This leads to an empty hallway with cat head statues on the walls. I think I know now, where this complex was supposed to be, and continuing down the hallway confirms it- the stairway leads to an empty place in the middle of the mountains on CLAW (coords 0x5EA,0x828,0).
I guess this telescope area was part of the original plot?
On an aside note, if the help is wanted, I wouldn't mind creating some paperdoll art for BG, such as for new clothing items, children's sizes (poor Spark), whatnot. As a Kisekae artist, I live for this sort of thing
.