On Earth Day, the American Institute of Architects (AIA) announced the winners of Committee on the Environment (COTE) awards. The goal of the program, now in its 19th year, is to recognize ten projects that protect and enhance the environment. For the third year in a row, the committee also awarded a Top Ten + building. This winner, chosen from past Top Ten honorees, must have quantifiable performance metrics. The Federal Center South Building 1202—an office building designed by ZGF for the Army Corps of Engineers in Seattle—is the 2015 Top Ten + recipient.

Click through the slideshow above to view the winning projects.