Wilderness „Kosy Most” is situated in a picturesque valley of the river Narevka, on the territory of the Protective Zone Hwozna of the Bialoviezha National Park. There is a bison sanctuary here. From the observation platform we may observe deer, roe deer and bisons in their natural environment. Those animals gather at the pastures with hay. The whole object of the sanctuary is fenced to create safe sphere between feeding bisons and tourists. From the observation tower standing nearby we may admire a picturesque landscape of the valley of the river Narevka.