Primorje-Gorski Kotar County is rich in valuable cultural and historical heritage. The cultural and historical heritage of the Liburnian area (the City of Opatija and the municipalities of Lovran, Matulji and MoscenickaDraga) also contributes to this richness. This thesis deals with the contribution of spatial planning and implementation of physical planning documents to its conservation and protection. An overview of immovable cultural property is presented, as well as an outline of spatial and urban plans according to the mentioned units of local self-government, and the method of covering the topic of protection of cultural and historical heritage in these spatial planning documents. Specific measures and special conditions for each building and operation are determined in the procedures for issuing spatial planning and construction acts in cooperation with the Conservation Department in Rijeka, Ministry of Culture, which is illustrated by several examples at the end of the paper. It is concluded that spatial planning is a powerful instrument in the protection of cultural and historical heritage, but for complete success it is necessary for the investor to adhere to the project and special conservation conditions when implementing the project. In this way, it is possible to revitalize the architectural heritage while maintaining its valuable features. This approach is especially important in the Liburnian area, where there is a strong interest in investing in catering and tourism facilities