This publication provides an introduction to the design of air traffic control facilities at airports and airfields such as control towers and related buildings. Here is what is discussed: 1. TERMINAL RADAR APPROACH CONTROL FACILITY (TRACON), 2. AREA CONTROL AND SURVEILLANCE FACILITY (ACSFAC), 3. JOINT CONTROL FACILITY (JCF), 4. AIR TRAFFIC CONTROL TOWER, 5. AIR TRAFFIC CONTROL TOWER BASE BUILDING