Medal of Honor: Frontline

In this mission you need to look for a map located behind a painting. When you are going for the Kitchen Set Keys, there are a couple of paintings in the same room, more of them later in the Dining area, and another one behind a bar in the Ballroom after that. The trophy should unlock here if you've viewed every one so far. As you continue further you will find more paintings in speech hall that has a drunken soldier. The map is in this room on the second level above the stage, behind a black and white painting of a sinking ship. In total there’s probably about 30+ paintings in the level.