The Chamber of Architects in Bulgaria, Sofia regional association (CAB – Sofia) together with the Union of Architects in Bulgaria are organizing series of events between September 17th and October 5th, 2015 in relation to the Day of Sofia (September 17th) and the World Architecture Day (October 5th). Part of the programme is supported by the Bulgarian Green Building Council (BGBC), because of the World Green Building Week (21-27 September), during which two events will take place in Sofia, Bulgaria. On September 24, BGBC will promote sustainable development and raise public awareness, emphasizing on sustainable urban planning issues and how the improvement of our cities may contribute to its economic growth and minimization of its environmental impact. The lecture will be followed by discussion with key stakeholders related to the creation of sustainable urban environment. On September 25, ongoing projects and current initiatives for sustainable urban development will highlight the regional efforts to make a contribution and a step forward towards our green future.