I remember going to an old building. The gate is very inconspicuous, just around the corner of the street, a seemingly ordinary house of the old building, a small door, looking up to see the above line clearly written Latvia's occupied period museum, exhibiting the history of the KGB in Latvia. Although the facade of the museum is small, there is no cave inside. The entrance is a short introduction to the history of Riga city. This is not the focus, the focus is on the whole point of explanation service, the librarian will unlock you into the inner room, and the gloomy and scary cells gradually come into view, as the interpreter pushes open the door of the prison, a section of the shocking dusty KGB history in Latvia is one by one Unblocked.