The Cecil and Ida Green Building, also called the Green Building or Building 54, is an academic and research building at the Massachusetts Institute of Technology, Cambridge, Massachusetts, United States. It was designed by Araldo Cossutta and I. M. Pei. Pei, among the world's most noted architects, had received his bachelor's degree from MIT in 1940. Principal donor Cecil Howard Green received a bachelor's degree and master's degree from MIT and was a co-founder of Texas Instruments.