Viettel Headquarters is another cool building that was designed by PTW architects. Most of the building is made out of glass walls and has a light color scheme throughout the rooms which gives a brighter and more open environment. I think it is interesting how its interior design is composed of lines and circles which seems simple but positioned in a unique way. I also think adding the various indoor plants inside the office gives the illusion of working outside in an open space rather than a typical office building that is crammed with cubicles. I think this open/bright environment gives a positive and creative influence on its employees. Although the building has many positive aspects, having too many glass walls can also be a negative thing. The glass walls can easily lead to distraction for workers as they can see activity around them. I also think having too many glass walls will make the building too bright inside work environments. This building is uniquely structured, and I think it brings a different and cool approach to the working environment.