Kline Tower, originally designed by Philip Johnson in 1966 as the Kline Biology Tower, has been transformed into a modern academic hub for Yale’s Mathematics, Astrophysics, and Statistics & Data Science departments. The updated 16-story structure includes 12 floors of departmental workspaces, one classroom floor, and three floors of amenities. New features include lecture halls, faculty offices, lounges, and flexible seminar rooms, along with a revitalized underground connector linking nearby Science Hill buildings.
To improve circulation in the single-core layout, each department now includes a three-story open stair that encourages movement and interaction. A monumental new stair connects the ground floor lobby to the classroom level above, maintaining the spirit of Johnson’s original design.
The former mechanical roof—Yale’s highest point—has been converted into a fully enclosed floor with 20-foot windows offering panoramic views of New Haven. This space now serves as a faculty lounge and event suite.
Sustainability upgrades include a redesigned thermal exterior wall, smart energy controls, and 47 real-time energy meters. The reimagined Kline Tower now stands as a vibrant centerpiece of Yale’s Science Hill, blending historic architecture with modern functionality and environmental responsibility.
