If you guys mean in the Bastille,hope that helps.there's a pair of hidden doors near the top of the tower, in the room with the 2 zombie prisoners hidden in vases, in one of the little alcoves. You open the first one then there's another inside that little room. Afterwards, there's a bunch of treasure on the roof, and then you have to jump to the wall and run all the way around to get the last treasure. It's a shield and i think a firefly jar?
Thanks!