Iłża is a small town in Masovian Voivodeship, Poland. It is located at around 51°10′0″N 21°15′0″E / 51.166667°N 21.25°E / 51.166667; 21.25. The Iłżanka River flows through the town. In 2004 Ilza had 5178 inhabitants. Attractions: - remains of the castle built in 1340 by bishop Jan Grot - the church dating back to 1326, nowadays baroque - Jewish cemetery from 19th century.