Masuria (Polish:  Mazury , German:Masuren) is a region in northern Poland famous for its 2,000 lakes. It has been the part of East Prussia inhabited by Polish-speaking, Lutheran Masurians. Masuria occupies much of the Masurian Lake District (Polish:Pojezierze Mazurskie). Administratively, it belongs to Warmian-Masurian Voivodeship (Polish:województwo warmińsko-mazurskie). Its biggest city is Ełk, often regarded as its capital. It has territory of about 10,000 km and population of 500,000.