Masuria is famous for its lakes — over 2,700 water bodies with clean water and sandy beaches. 1. MIKOŁAJKI BEACH (Lake Mikołajskie) — main city beach, 300 m. Fine sand, gentle slope — ideal for children. 2. GIŻYCKO BEACH (Lake Niegocin) — city beach with pier. Sailing school, windsurfing. 3. RUCIANE-NIDA (Lake Bełdany) — cozy forest beach in Pisz Wilderness. 4. AUGUSTÓW (Lake Necko) — "Bielnik" + city beach. 5. WIGRY (Wigry National Park) — wild beach on the peninsula, near the Camaldolese Monastery. 6. PISZ (Lake Roś) — long sandy beach by Poland's second-largest lake. 7. MRĄGOWO (Lake Czos) — small but cozy city beach. 8. OSTRÓDA (Lake Drwęckie) — beach with cabaret amphitheatre. 9. IŁAWA (Lake Jeziorak) — Poland's longest lake (27 km). 10. WĘGORZEWO (Lake Mamry) — Poland's second-largest lake, beautiful sunsets. Lake water heats to 24°C in July. Most beaches open June-September. Free entry, parking 5-10 PLN.