The building that today houses the Port of Constanța Museum is closely associated with the presence of Queen Marie in Constanța during the early twentieth century. Known as the “Queen’s Nest” (Cuibul Reginei), it served as a retreat and observation point overlooking the harbor and waterfront. Located in a strategic area of a city undergoing rapid modernization, the building formed part of the symbolic landscape of Dobrogea after its incorporation into the Romanian Kingdom in 1878 and reflected the monarchy’s interest in the maritime development of Constanța. During the communist period, the building’s original function changed. Like many properties associated with the monarchy, it was absorbed into the administrative and institutional structures of the socialist state. At the same time, the Port of Constanța underwent massive expansion between the 1950s and 1980s, driven by the development of industrial, petroleum, and maritime infrastructure. The former “Queen’s Nest” gradually became overshadowed by the large-scale construction projects and economic transformations taking place throughout the port area. After 1990, the building was restored and incorporated into broader efforts to preserve and interpret the region’s maritime heritage. Today it houses the Port of Constanța Museum, an institution dedicated to the history of navigation, port development, and maritime infrastructure in Dobrogea. The museum presents documents, models, photographs, and artifacts related to the evolution of the Port of Constanța, from the projects of Anghel Saligny and the modernization efforts of the late nineteenth century to the socialist-era expansions and the contemporary transformation of the port into a major logistics hub.