After going past the first area, just before some stairs in a bookcase / shelves

After going up the steps go down the steps which lead to rubble

Behind the locked door - combo 1080

On the left, as you come up from Basement Storage area.

In the middle of the merry-go-round

From merry-go-round through door to left, up some stairs

Under a trash can in front of the two statues pointing up

In the room which you have to hack the door to enter, on top of a filing cabinet.

Behind the stage, take the door to the left (when facing stage)

Up on the balcony, facing the stage

In the cinema hallway leading to the projection booth.

On the piano in the room which leads to the frozen area

In the frozen room, go towards the right corner - in some ice

In the room with the big statue of the bear, go up the stairs, end of path

After you get access to stanley - in his room on the floor

Dionysis Park - Behind the door, combo 1080

Dionysis Park - On the path to the train