If you are a history geek like I am, this is an interesting place to visit :) And it's free, so there's not a lot of reason to not sneak a peek.
When you want to know of the happenings from another country's perspective, then this is interesting. Just have a quick look around read about the history and stroll around.
Though it is not very elaborate, it only talked about Korean and Japan relations since 1700-1800’s from a Korean perspective.