Dedicated to Russian art of the 20th Century, this is the extension part of the Tretyakov project. Stunningly presented, each work contributes to the chronological project. Head up to the fourth floor to begin with the Moscow modernists. Not only is this venue, in terms of English, one of the friendliest, it is also very well presented. Everything is explained in English and as well as the canvas texts there are several multimedia and video representations providing a historical and political framework to understanding the pieces. Most impressive is the video of the destruction of the Cathedral, right near to a full screen window from where you can see the site today. A visit here is a real history lesson and allows the visitor to see the Soviet era as the long and complex process it was, full of difficult and conflicting attitudes and ideas and stages.