In tourism, the maximum capacity of a site or area to sustain tourist activity without deterioration in the quality of the visitor experience of the environment. Hence, carrying capacity may be seen to have physical, social (perpetual) and environmental dimensions and is normally expressed in terms of a given number of concurrent users of e.g., a historic attraction, beach or resort. The concept was first applied extensively in tourism in the 1960’s when it was also incorporated in the planning of such major developments as the Languedoc-Roussillon project in France.