Giżycko is a town in northeastern Poland with 28,597 inhabitants as of December 2021. It is situated between Lake Kisajno and Lake Niegocin in the region of Masuria, within the Warmian-Masurian Voivodeship. It is the seat of Giżycko County. Giżycko is a popular summer tourist destination due to its location within the Masurian Lake District and possesses numerous historical monuments, including a 14th-century Teutonic castle.