The Silent Hill Historical Archive in "Silent Hill 2: Remastered (SILENT HILL 2)" is a deeply hidden area in the game. There are relatively few things that can be collected in it. To collect them all, first go to the second left hand corner. Get Strange Photo #17 in a room.
How to collect all Silent Hill Historical Archives in Silent Hill 2
Silent Hill Historical Archive
Get in the second room on the left: Strange Photo #17
Go down the long, long stairs and jump out of a hole
There is actually only one way here, get the key item from a room: the Spiral Text Key
You will then need a three-digit password to go out. Possible options: 239, 293, 329, 392, 923, 932
Jump again after using the key