Yon rapò 1986 sou reyalizasyon pwojè a (1979-1986) ak yon demann finansman enkòpore. Konsèvasyon moniman yo: Sitadèl - Sit Sans Souci - Sit fòtifye Les Ramiers - Devlopman Pak Istorik Nasyonal la. Pwojè a pwopoze yon apwòch global ak entèdisiplinè nan aksyon yo dwe antreprann nan domèn prezèvasyon, restorasyon ak amelyorasyon moniman yo ak nan devlopman Pak Istorik Nasyonal la.
The National Historical Park, covering a geographical area of 22 km2, includes the monumental complex of the Sans Souci Palace, of the Citadel and the Ramiers Fortified Site, is the subject of a joint UNESCO and Haitian Government project represented by the National Heritage Preservation Institute (ISPAN). An extension of the PUD/UNESCO project (HAI 29.011) which began in 1979 is planned until 1985, thus ensuring the maintenance of the consultants as well as the acquisition of materials and basic equipment required for the preservation of the monuments: Citadelle, Palais Sans Souci and fortified site of Les Ramiers, In conjunction with these works, the development of the National Historic Park will be carried out, encompassing the monumental zone.