Green Line concepts from Boston Architectural College students Post published:March 22, 2009 Post category:Green Line Students and area residents gathered at SCAT on February 14 to look at Green Line design ideas and discuss the future of Union Square. You Might Also Like The rest of the Green Line opens Monday! Here’s where to celebrate December 8, 2022 Important Green Line hearing Dec. 21 – it’s not a done deal yet! December 15, 2005 The new cars for the Green Line Extension! April 18, 2015