The Landau Building is part of I.M. Pei's plan for the eastern part of the campus. A two story entrance portico leads into the 7 story building which has a triangular footprint.
Sources:
MIT. 2022. “Master Architect I.M. Pei Leaves Distinctive Mark On MIT Campus – Alumni Spotlight.” Alumni Spotlight. April 26, 2022. https://alumnispotlight.com/2022/04/26/master-architect-i-m-pei-leaves-distinctive-mark-on-mit-campus/. Archived at: https://perma.cc/LU48-EZ49.
Morgan, Keth N. n.d. “Landau Chemical Engineering Building (Bldg. 66).” SAH ARCHIPEDIA. Accessed September 12, 2022. https://sah-archipedia.org/buildings/MA-01-MT9. Archived at https://perma.cc/3M4W-ZDLD.
School of Architecture and Planning, MIT. 2019. “Renowned Architect I.M. Pei ’40 Dies At 102 | MIT Department Of Earth, Atmospheric And Planetary Sciences.” EAPS, MIT. May 20, 2019. https://eapsweb.mit.edu/news/2019/renowned-architect-im-pei-40-dies-102. Archived at: https://perma.cc/KZ66-3KEN.