Macky Hall, former Treadwell (1880s) estate by architect Clinton Day, has been campus centerpiece of California College of the Arts since it moved to its Oakland site in 1922. This hardworking building was almost constantly adapted; additions were built on earlier additions, and every porch was enclosed to capture more space. Macky Hall was restored, not to its original state, but as a plausible adaptation of an 1880s house for its current purpose.