Church occupied an important place in life of the manor owners. It became a place of christening, wedding and repose. Having lost their historical significance, manors and churches have become a ""monument of history and culture"" and are often in disrepair. The article examines the main characteristics of the churches of the ""estates of the highest nobility"" of the St. Petersburg province, the essence of their identity. The recommendations for the preservation of churches in the estates ""Maryino"", ""Ropsha"", ""Pyataya Gora"", based on the analysis of spatial, urban planning and value characteristics, are described.The purpose of the work is to offer reasonable recommendations for the preservation of the most valuable manor churches of the St. Petersburg province. The tasks of the research were: 1. Consideration of the main characteristics of manor churches. 2. Identification of the three most valuable churches for specific estates and for the Leningrad region as a whole. 3. Giving recommendations for the preservation of chosen churches based on the analysis of individual characteristics. The researched material allows us to conclude that the importance of churches in estates is great. Today it is important to preserve the small proportion of manor churches, which remained as evidence of the lost culture. At the same time, do it comprehensively, in conjunction with the park structure and other manor buildings. The preservation of the estate heritage is justified from the point of view of preserving national identity and creating developed cultural spaces. The proposed recommendations for the preservation of the ruined churches in the estates ""Maryino"", ""Ropsha"" and ""Pyataya Gora"" will form the basis of a comprehensive project proposal during the master's thesis and will attract attention to the estate heritage from the society, security agencies and investors.

Keywords: manor churches, ruined churches, estates of the highest nobility, St. Petersburg province, Marino, Ropsha, Fifth Mountain, preservation