This edited volume originates in the 2011 conference of the International Network for the History of Hospitals, held in Lisbon and Evora, Portugal. It focuses on how institutions for the care and cure of the sick have organised their activities at every level, from the delegation of medical treatments between groups of practitioners, to the provision of food and supplies and the impact of convalescence on lengths of hospital stays. It draws on new European and North American research which highlights an area of medical history that has not yet had adequate, sustained attention, discussing the tensions between theory and practice and between patients and practitioners. Through detailed case studies and comparative analyses it explores the changing and evolving understanding of the function of hospitals, and their wider relationships with their communities.