At the entrance of this buidlding you can see a huge mural of the king, also in the facade a colourful artwork made by amazing street artists. There're some chairs outside, with something like a kind of umbrella (2nd picture in the gallery), all of them painted with graffiti. So you feel like you're like in a open air gallery. This cultural center is located in an area with a lots of buildings, shopping center, monitors and a lot of traffic. It's for sure the best place for a break!
You can check for free exhibitions in Bangkok Art and Cultural Center.  the same place where you can find Montana Colors shop.