Aquasfera OSiR Olsztyn

The city-run Aquasfera sells single-visit and full-day pool admission that includes its sauna zone. This large aquatic centre has Finnish, steam and infrared cabins alongside a recreational pool and cooling facilities. Visitors can purchase admission at the public ticket desk; the sauna complex is part of the same facility.

Saunas daily 10:00–21:45; pool Mon–Fri 06:00–21:45, Sat–Sun 10:00–21:45