integrity

A measure of the authenticity of a property’s historic identity, evidenced by the survival of physical characteristics that existed during the property’s historic or prehistoric period in comparison with its unaltered state; for example, a historic building of high integrity has few alterations or ones that can be easily reversed, and an archaeological site with high integrity is one that is relatively undisturbed; criteria evaluated incldue association, design, feeling, location, and materials. (Bucher, 1996)