ABSTRACT
Heritage sites can be at risk from two sources: first, an external threat of some form; and, second, the risks and problems inherent in any intervention that might be necessary to mitigate or eliminate those risks. In these circumstances the acceptance of some risk becomes necessary, as failure to intervene might well be counter-productive: in essence, one would be waiting for the threat or risk to materialise. Analysis of a heritage site is absolutely necessary to understand the processes of degradation and the risks they face for its future conservation. Every heritage site faces risks and threats from a variety of sources, including its climatic context, seismic risk, unnecessary interventions and tourist overuse, and so on, and preventative conservation should be used in order to prevent deterioration and increased threats in the future. The solutions in evaluating a heritage site are unique in terms of their heritage characteristics and values, as well as all the problems and threats they encounter.
