In the planning of a new Medical Center at the University of Kentucky, a unique opportunity was provided to begin with the delineation of a philosophy and basic ob jectives around which architectural planning, program design, and staff recruitment could be developed. From the beginning, behavioral scientists have been prominent in planning, activa tion, administration, teaching, and research within the Medical Center. Features of the Center include special emphasis on meeting the needs of students and patients, on providing comprehensive health services, and on relating the Medical Center to the health needs of the community and region. The Medical Center has provided strong support for a Depart ment of Behavioral Science which has assumed many func tions. The primary impact of behavioral science is reflected in the charter and character of the institution and in the extent to which behavioral-science concepts have become inculcated in the philosophy, values, and role perceptions of personnel at varying levels of responsibility.