Masuria (, ) 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 . Administratively, it belongs to Warmian-Masurian Voivodeship . Its biggest city is Elk, often regarded as its capital. It has territory of about 10,000 km² and population of 500,000.