Treasure Map

Pure decoration, and one of the harder pieces to plan around because the Angler decides when you get it rather than you. Hover it on the minimap and the game calls it a painting, which is exactly how it behaves: it hangs flat on a wall and follows the same placement rules as any framed piece.

The placed version is wider than the inventory icon implies, so leave clearance before you start nailing shelves and torches around the spot. The art reads like a proper pirate chart, coastline and skull and footprints leading to an x, which makes it the best fit the Angler gives you for an ocean shack or a dock build.