Proposed Restoration projects are to be subjected to knowledgeable 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. The acceptance of new techniques and materials for the works of preservation.
Historical sites are to be given strict custodial protection.
Attention should be given to the protection of areas surrounding historic sites.