Though ‘performance' first evolved as a concept in the humanities in the 1940s and 1950s, it has never previously been systematically applied in architecture in an inclusive manner. Here Michael Hensel offers Performance-Orientated Architecture as an integrative approach to architectural design, the built environment and questions of sustainability. He highlights how core concepts and specific traits, such as climate, material performance and settlement patterns, can put architecture in the service of the natural environment. A wide range of examples are cited to support his argument, from traditional sustainable buildings, such as the Kahju Bridge in Isfahan and the Topkapí Palace in Istanbul to more contemporary works by Cloud 9, Foreign Office Architects, Steven Holl and OCEAN.