In this book, the authors discuss the design and construction, types and usage limitations of wind tunnels. Topics include the use of wind tunnels to analyse wind loading on scaffold structures; the characteristics of the Architecture and Building Research Institute wind tunnel project; analysis of the wind environment and air quality in densely populated areas using wind tunnel experiments; wind tunnel investigation into the drag characteristics of catamaran form; and environmental wind tunnels designed and constructed to investigate a wide range of aerodynamic tasks.