Today I receive postcard from other postcards collector - Kazimierz. Postcards present polish city - Tarnobrzeg. From wikipedia:
"Tarnobrzeg is a town in south-eastern Poland, on the east bank of the river Vistula, with 49,753 inhabitants, as of June 2009. Situated in the Subcarpathian Voivodeship since 1999, it had previously been the capital of Tarnobrzeg Voivodeship (1975–1998)"