Heiligkreuzgebirge
Ostrowiec lies on the Kamienna river. Its northern districts are located in the Iłża Foothills, while southern part belongs to the Opatów Upland. Świętokrzyskie Mountains lie a few kilometers away, southwest of Ostrowiec. There are two interesting places near Ostrowiec: the archaeological reserve at Krzemionki (a UNESCO World Heritage Site and Historic Monument of Poland) and dinosaur park in Bałtów.