Svetlogorsk, originally known as Rauschen, has deep roots dating back to the Middle Ages. The first written mention of the settlement Rushe-moter on the Sambia Peninsula dates back to 1258. In those times, the lands belonged to the Old Prussians, but they soon came under the control of the Teutonic Order. The knights dammed a stream, creating the Mill Pond (now Lake Tikhoe), which became the economic heart of the future settlement for many centuries.
The city's geographical location determined its fate. Situated on the high, steep shore of the Baltic Sea in Russia (historically East Prussia), Svetlogorsk remained a quiet fishing village for a long time. However, the combination of sea air, pine forests, and picturesque terrain in the 19th century transformed it into one of Europe's most prestigious climatic resorts.
The city's early economy relied on milling and fishing, but with the arrival of the Prussian aristocracy, the focus shifted to the hospitality industry. The founding of the resort in 1820 was a turning point, as the healing properties of the local nature received official recognition, attracting investment and the elite of that time.