You're on a treasure hunt for a mysterious object, and the clue you need is hidden somewhere in a giant library. You have the following clue:
Someone else has tried and failed to find the object of interest, but died in the process. He did, however, manage to solve this riddle. You have his answer, but unfortunately, it's too faded to read, though you can still see some characters.
Where should you look?
EDIT: As you are trying to solve this riddle, you have one of your best
gophers workers (a.k.a. me) attempting to decipher the journal of the deceased man, Sir Tim le Death, in hopes of getting more clues. He however seems to be preoccupied with some confounded site called Puzzling.SE, so you don't expect any hints for a few more hours.
Edit 2: Your worker finally pulled through. Here is an excerpt from the diary of Sir Tim le Death.
This puzzle was by far the hardest of the ones I have faced so far. I was tipped off to the solution by the shape of the grid of words, and the words 'spatial geometry', which for some reason appeared in my head. That, coupled with the ubiquitous presence of the number five: five letters, five rows, five columns, another twenty five letters, led me to reason that. .
That's how far he got.