A further problem of mass tourism is that created by congestion. The subject of congestion can be considered in three ways. There is first the question of the physical capacity of an attraction to absorb tourists;car parks, streets, beaches, ski slopes cathedrals and similar features all have a finite limit to the numbers of tourists that can be accommodated at any given time. However, a second consideration is psychological capacity of a site—the degree of congestion which tourists will tolerate before the site begins to lose its appeal. Quantifying this is no easy matter since perception of capacity will differ, not just according to the nature of the site itself but according to the market which it attracts.
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