The Royal Tapestry is treasure that can be obtained in Sly Cooper: Age of Thieves in the episode Braverobber. It is worth 268 coins and the allotted to reach the safehouse in is twenty-five seconds.
"The royal tapestry was a part of a ruined castle that was invaded by the Scottish some time ago. The former king of this castle was a tyrant, enslaving his people and betraying allies. Needless to say, Slaigh was more than willing to take this when he stole it during the storming of the castle."
It is located behind a large skateboarding ramp that is blocked by a special machine. Sly's Repairman Costume is needed to reach this treasure.