The article examines the historical and artistic significance of the five alabaster reliefs in the collection of the Museum of the History of Riga and Navigation. These reliefs, made in the 17th century, are the only examples of this type of decorative sculpture preserved in Latvia, and their origin is connected with Mechelen, Flemish alabaster export centre. The study highlights the historical context of the reliefs, including the role of Riga as an important port city in the Baltic Sea region in the 16th and 17th centuries, and the public demand for art and luxury goods. Specific relief scenes and monograms are described in detail, which allows identification of their origin and the workshops of Mechelen masters. Also, the iconography of the reliefs and its connection with plots of the Old and New Testaments are analysed.The article also discusses the initiation of the relief restoration process, which was carried out in cooperation with the Royal Institute for Cultural Heritage of Brussels. The restoration work was led by the restorer Jana Lībiete, taking into account the specific nature of alabaster and the need for consultations by experienced specialists.The article provides a broad insight into the traditions of Flemish alabaster sculpture, its spread and influence on the European art market, highlighting the importance of this art form in the cultural history of Latvia and the Baltic region.