A red-brick tower inside the Olsztyn Castle is seen in Olsztyn, Poland, May 26, 2026. The city is known for its lakes and natural scenery. (Photo by Aleksy Witwicki/Xinhua)
This photo shows a view along the Lyna River in Olsztyn, Poland, May 26, 2026. The city is known for its lakes and natural scenery. (Photo by Aleksy Witwicki/Xinhua)
Swans swim with their young in a lake in Olsztyn, Poland, May 26, 2026. The city is known for its lakes and natural scenery. (Photo by Aleksy Witwicki/Xinhua)
Buildings and restaurants along the Lyna River are seen in Olsztyn, Poland, May 26, 2026. The city is known for its lakes and natural scenery. (Photo by Aleksy Witwicki/Xinhua)
An open-air amphitheater is seen in Olsztyn, Poland, May 26, 2026. The city is known for its lakes and natural scenery. (Photo by Aleksy Witwicki/Xinhua)
Tourists visit a square in the Old Town of Olsztyn, Poland, May 26, 2026. The city is known for its lakes and natural scenery. (Photo by Aleksy Witwicki/Xinhua)
A street view is seen in Olsztyn, Poland, May 26, 2026. The city is known for its lakes and natural scenery. (Photo by Aleksy Witwicki/Xinhua)
