"Do you really wish to know?" — Spoilers from the books and/or adaptations to follow!
Abandoned Storehouse is a location in southern Toussaint, just to the east of Tesham Mutna Ruins.
The late Vladimir Crespi used this place to house archespore seedlings that he was using to try and sabotage two of his competitors, Vermentino and Coronata, but he was killed by The Beast of Beauclair before he could bankrupt them.