This document discusses the planning and design of different units within a hospital. It begins by outlining the main functions of hospitals as preventive, curative, training, and research. It then describes different categories of hospitals based on level of care and clinical specialties. Key principles for planning hospital units are discussed such as protection, separation, control, and circulation. Specific areas covered include inpatient units, outpatient units, emergency units, intensive care units, obstetrics units, pediatric units, and radiology/laboratory services. Different ward designs like Nightingale, variant Nightingale, race track, and courtyard are also summarized.