A tough interrelation: Architectural conservation theory and electromechanical installations arrangement in late 19th and early 20th century monuments

In the 60 years since its foundation, ICOMOS has achieved a major contribution to the establishment of common principles for the conservation of architectural heritage. Starting with the Venice Charter, it has shaped a constantly growing theoretical framework, which, within the European setting, has placed the emphasis on preserving monuments “in the full richness of their authenticity”, as prescribed by the renowned document. Yet no matter how meticulously these principles are applied, a major cause of concern frequently arises: the arrangement of the all too often complex and sizable electromechanical installations that are needed in order to ensure, next to an attractive restoration, a viable and safe use of the conserved monument. The delicate issue calls for a focused discussion, which will highlight the complexity of achieving a balance and provide directions for optimum future action. This is the goal of the present paper, which initially identifies the related conservation principles, and secondly, reviews and evaluates five characteristic case studies in major late 19th and early 20th century monuments of Thessaloniki, in northern Greece. The overall endeavour culminates in the deduction of original, practical conclusions as to the prerequisites of a positive outcome, both in terms of necessary steps and appropriate actions.