Wikipedia
Ruciane-Nida is a town in Pisz County, Warmian-Masurian Voivodeship, Poland, with 4,934 inhabitants (2004). The town was formed in 1966 by the merger of three smaller settlements: Ruciane (, renamed Niedersee in 1938), Nida (German: Nieden), and Wola Ratajowa. The town of Ruciane-Nida is a well-known tourist centre within the Masurian Lake District, with a popular railway line running through it: a D29-219 line – Olsztyn – Szczytno – Świętajno – Pisz – Ełk. In the summer, it becomes the furthermost Southern station of the Masurian Recreational Navigation system.
Before 1945 the area was part of Germany ( East Prussia). After World War II the region was placed under Polish administration and ethnically cleansed according to the post-war Potsdam Agreement. The native German populace was expelled and replaced with Poles.