Interventions on a monument follow a code of ethics and are carried out within the frame of actions that are applicable to built heritage in general.
Built heritage and material heritage are the materialization of the historical consciousness of a community through locations, buildings, objects, and cultures. Preserving this heritage demands taking action, but also following principles, as defined in the Venice Charter (1964) by the International Council on Monuments and Sites (ICOMOS).
PRESERVING a monument consists in a set of cultural, legal, and political measures taken to ensure the preservation of its “identity” (what makes it recognizable) through time in all its substance and with its historical components.
RESTORING a monument includes all the practical, constructive, or technical measures taken in order to ensure the preservation of the monument, as well as to showcase it and adapt it to contemporary uses while preserving its identity. Restoring a monument must not be confused with renovating it, as renovation consists in refurbishing, often by erasing all its historical traces.
Lastly, the REHABILITATION of a monument consists in bestowing it with a full civil and social role again.