International organisations for restoration on operational and advisory levels are to be established. Proposed restoration projects are to be subjected to knowledgable criticism to prevent mistakes which will cause loss of character and historical values to the structures. Problems of preservation of historic sites are to be solved by legislation at national level for all countries. Excavated sites which are not subject to immediate restoration should be reburied for protection. Modern techniques and materials may be used in restoration work.
Historical sites are to be given strict custodial protection.
Attention should be given to the protection of areas surrounding historic sites. Despite their tentative nature, these resolutions were not re-examined until the 2nd international congress, which did not take place until May 1964, where it approved the Venice Charter .