Exterior, Brick Siding Material, Stone Siding Material, and Concrete Siding Material Making use of a sculpted berm, Tod Williams Billie Tsien Architects built identical 21,500-square-foot dormitory buildings at Haverford College without interior stairwells or elevators, freeing up room for courtyards and more generously sized common spaces.  Photo 9 of 11 in 11 Innovative and Modern Schools Where Creativity and Good Design Rule from Cutting-Edge Dorms Embrace The Landscape with No Need for Elevators or Interior Stairs