Hello every one,
I've completed all the locations but I miss the 5th tresor... where or how can I find it, please? Need your help!
DETERMINE MISSING TREASURE PIECE
Click on the Treasure in your museum (or wherever they are on the computer version of the game.) An info window appears with clickable icons that show which location the treasure piece is in.
Just keep in mind that treasure pieces never count as tiles, so the location can say it's complete despite the missing piece(s).