Rzeszów is the biggest city in southeastern Poland with a population of 184,493 in 2014. It is located on both sides of the Wisłok River, in the heartland of the Sandomierska Valley. The city, which was granted a town charter in 1354, has been the capital of the Subcarpathian Voivodeship since 1999, and is also the seat of Rzeszów County.